How to understand how much gasoline is left in the tank using the Priora sensor

Tank volume of a Priora car - article number, price, malfunctions

The tank volume of the Priora car “inherited” from its predecessors - 43 liters.
How many years have passed, the VAZ-2108 was equipped with a gas tank of the same volume, the same was installed in the VAZ-2110, and after the VAZ-2110 was removed from the assembly line, and after the launch of production of the Lada Priora, the number of liters did not change! However, the fuel tank of a Priora car (sedan, hatchback and station wagon) has its own article number (catalog number) - it is the same on all three bodies. The Priora should not despair: this fuel tank volume is considered the most optimal, for which there is a simple explanation: the Priora is a city car with low consumption on the highway and average consumption in the city. In the city, it is easy for a motorist to find a gas station, fill the tank regularly; on the highway, it is easy to calculate the distance to the nearest gas station, and then refuel on time. The volume (capacity) of the tank on the Priora is ideal for the operating conditions for which it is intended.

Lada Priora with a tank volume of 43 liters was produced from 2007 to 2013 - there were no changes. The volume does not depend on the body - be it a sedan, hatchback, station wagon or coupe - or on the configuration. The tank capacity on the Priora is designed to allow you to get from point A to point B within the city, sometimes stopping at a gas station. The number of liters, of course, can be called “untrue”: curious Prior owners found out that the car is literally filled “to the brim” with 49 liters of gasoline.

The tank on the Priora looks like this

1. Standard gas tank - article number and price
2. Basic faults
3. Removing and installing the tank
4. It will be most convenient to dismantle the fuel tank without gasoline, or with a small amount of it. The work will take place in the following order:
5. How far can you travel?
6. On a full tank
7. With the maximum filling of the gas tank, the Lada Priora, powered by AI-95 (according to the passport!) will travel:
8. When the gas pump on the dashboard came on

VAZ 2170 | Fuel tank

The fuel tank of the Audi 80 is technically quite advanced, but it has also been improved for all-wheel drive models. The complex shape of the fuel tank helps achieve a large tank capacity without sacrificing luggage compartment volume. In the middle of the fuel tank you can see the fuel pump and fuel quantity indicator sensor. At the top right is the filling pipe with all the ventilation and filling hoses.

Rear right wheel arch with fender liner removed

The fuel tank in front-wheel drive Audi 80 models has a capacity of about 66 liters; in all-wheel drive versions it holds a minimum of 64 liters. To achieve a flat surface on the bottom of the luggage compartment with the possibility of loading the passenger compartment, the fuel tank is installed in the rear of the car under the sheet bottom of the luggage compartment. The tank itself is made of plastic - a material that allows almost unlimited possibilities when shaping. These opportunities were used one hundred percent. For example, the fuel tank of all-wheel drive models occupies almost all the free space under the body, which is done in order to achieve the largest possible volume. Therefore, the shape of this car part looks rather strange. To ensure that parts of the fuel tank located below are also emptied during the trip, a clever trick was used: in this lower area there is a pump that, when the engine is running, constantly pumps fuel to the parts of the fuel tank located above. Moreover, this happens quite simply: the return fuel from the fuel return line picks up additional fuel in the pump housing and carries it upward.

Another trick was used to deal with chambers of different volumes in the fuel tank: a hose is connected to the filler pipe leading directly to the suction area, so that it fills first. This is important, for example, when adding a small amount of fuel from a spare canister.

Tip: Before you start working on the fuel system, you must always disconnect the ground cable from the battery. Unintentional electrical shorts can cause dangerous sparks.

Why is fuel tank ventilation needed?

• Ventilation of the fuel tank is important for uninterrupted fuel supply: in the same quantity as the fuel consumed, air must enter the tank, otherwise a reduced pressure will form in the fuel tank and the flow of fuel will stop.
• The fuel tank must be ventilated to allow the contents to expand when heated.
• When refueling, it is necessary that air can escape from the tank, because otherwise the poured fuel will rise again to the filler pipe and begin to pour out.

Ventilation of the fuel tank in the Audi 80

• The fuel tank ventilation pipe is connected directly behind the filler pipe. The ventilation duct leads first to the so-called gravity valve. The latter closes the pipeline as soon as the car tilts to the side by more than 45°. This prevents fuel leakage through the ventilation ducts during an accident. After passing through the air valve, the ventilation line does not lead directly to the outside, however, but ends in the activated carbon reservoir in the front right wheel arch. Its purpose is to catch fuel vapors passing through this pipeline (arising, for example, as a result of heating the contents of the fuel tank). When the engine is running, these gases are again sucked out of the activated carbon tank at a certain engine load. When this should happen is determined by a load-dependent solenoid valve.
• In parallel to this system, the air valve opens the expansion tank of the fuel tank during refueling, located in the filling channel (in the right rear wheel arch) in the form of a separate container. Thus, with increasing fuel levels, fuel vapors can be displaced there instead of escaping into the atmosphere.
• While driving along this path, outside air enters depending on the amount of fuel consumed, so that a vacuum does not form in the tank.

Standard gas tank - article number and price

The standard gas tank has article number 21082110101370. The price ranges from 3,500 to 5,500 rubles. All of them are produced at the same factory, the issue of pricing lies with the conscience of the seller. A used gas tank costs from 1000 to 2000 rubles. No need to be cheap - a gas tank is not just a plastic container, it should not be damaged. The quality of a gas tank used by someone can be doubted.

The dimensions and size of the tank on the Priora are such that the tank will fit in its predecessor models: the volume of the tank has not changed. A full tank always fills up to 43 liters.

Removing and installing the tank

Removing the gas tank on a Priora begins with compiling a set of tools:

1. Set of wrenches;
2. Set of heads;
3. Flat and Phillips screwdrivers;
4. Pliers.

It will be most convenient to dismantle the fuel tank without gasoline, or with a small amount of it. The work will take place in the following order:

1. Drive the car into a pit or overpass, secure it in place by tightening the handbrake;
2. Remove the rear seat completely, and then the part of the carpet under which the fuel pump cover is located;
3. Remove the two screws that secure this cover and remove it. In front of you is the fuel pump;
4. Find the wiring harness block, bend the clamp, after which you can disconnect the wiring block;
5. Start the engine, wait until it stalls (the fuel has completely drained out of the ramp). Then equalize the pressure in the fuel drives by turning the starter for about three seconds;
6. Remove the negative terminal of the battery;
7. Squeeze the plastic clamp on the fuel pump fitting (there are two of them). Disconnect the tube from the pump fitting;
8. On the second fitting, bend the second clamp, disconnect the other tube;
9. Find the air outlet hose and loosen its clamp. Remove the hose from the pipe;
10. Remove the tube responsible for draining gasoline from the separator by clamping the clamps on the sides;
11. Where the connecting hose from the fill pipe is attached to the tank nozzle, loosen the clamp. Remove the hose;
12. We proceed to direct dismantling. Remove the two clamps that secure the tank;
13. If you are going to change the tank, then it is worth changing all the supply hoses. Remove the air outlet hose from the tank fitting;
14. Go back upstairs to where you removed the cover under the seats. The nut securing the “-” must be removed. After this, you can remove the wire itself;
15. Unscrew the remaining seven nuts that secure the pressure ring and remove it. Carefully remove the pump, tilting it to the side to keep the fuel gauge sensor lever intact;
16. There is an O-ring (rubber) on the tank flange. It may have cracked over time, so it might be a good idea to replace it;
17. Remove the filler pipe filler plug, and then remove the bottom bracket securing it. Strictly after this, dismantle the upper bracket;
18. Remove the upper end from the facing part of the filling pipe and remove the pipe. Remove the facing part itself. If the elastic band is not damaged, it can be put back;
19. Remove the hose from the filler neck.

Install the parts in reverse order. You can do without replacing parts, but checking the integrity of the seams of hoses, gaskets and other parts will ensure stable operation of the fuel pump and fuel sensor.

Major breakdowns and malfunctions

There are several main reasons for tank breakdowns after which it needs to be repaired or replaced with a new one.

The studs securing the fuel pump cup are one of the main reasons for tank failure and the reason for its repair. Although the diameter of the studs was increased in Priora, it is not difficult to tear them off.

A tank breakdown occurs when driving on country roads, since the tank does not have any protection and is located in a vulnerable place.

Corrosion in the tank is also one of the reasons for dismantling the tank and cleaning it from dirt or even replacing it with a new one.

How far can you travel?

The volume of the Priora's fuel tank is designed so that the car can travel a certain distance without refueling. In many ways, the power reserve is individual – that is, it depends on the driver’s driving style. Sharp acceleration increases fuel consumption, and the same thing happens if you select the wrong gear. But there is not only a human factor. Firstly, different amounts of fuel are consumed in the city, on the highway and in the combined cycle when recalculated per 100 km.

Secondly, a lot depends on the engine: the Priora was equipped with engines with a displacement of 1.6 liters with eight and sixteen valves and a power of 81, 87, 98 and 106 hp. Plus, since 2013, after restyling, the Priora was equipped with a robotic automatic transmission. The most popular choice is a sixteen-valve engine with 98 hp. along with manual transmission. Calculations will be given for it.

On a full tank

So, the configuration we have chosen consumes:

• 9.8 l per 100 km in the city;
• 5.6 l per 100 km on the highway;
• 7.2 liters per 100 km in the combined cycle.

With the maximum filling of the gas tank, the Lada Priora, powered by AI-95 (according to the passport!) will travel:

• 438.77 km in the city;
• 767.88 km on the highway;
• 597.22 km combined cycle.

It is worth subtracting at least 30 km from these figures so as not to kill the fuel pump - if it pumps air and debris from the bottom of the gas tank, its service life will gradually come to an end.

When the gas pump on the dashboard came on

If the gas station icon lights up on the panel, then this is not good - there is less than 10 liters left in the gas tank. This is, one might say, a critical situation. Of course, there have been cases when a person drove with a “light bulb” another 90 km along the highway, but it is better not to risk it - limit the radius of the gas station search area to 20 km immediately after you see the light bulb.

Using diagnostic mode

If your car has a dashboard from the Renault family, which selectively includes LADA, Nissan and some others, you can find out how much gasoline is in the tank, accurate to the nearest liter, in the panel diagnostic mode.

To run diagnostics on the device, you need to:

– before turning on the ignition, hold down the daily mileage reset button for 5 seconds, then turn on the ignition and release the button when the instrument needles begin to move;

– use the same button to switch the diagnostic mode of the instrument panel, finding the gas pump icon in the upper right corner.

Below this icon a number is displayed that exactly corresponds to the volume of fuel remaining in the gas tank.

You can check whether the diagnostic mode of the instrument panel will work on a specific car experimentally.

FLS calibration. Priora gas tank capacity.

It all started with the fact that the fuel gauge needle stopped showing the maximum even when I filled the tank full - it did not reach the maximum, first one division, and then one and a half. You can’t live like this, I thought. And, to be honest, I have long been tormented by curiosity, how much gasoline remains in the tank when the warning light comes on? The solution is to open the gas tank.

I removed the chip from the fuel module and ran the starter for about 10 seconds, burning out the remaining fuel in the fuel line. Then I let the battery rest for a few minutes and drove it for another 10 seconds. Enough. Then nothing interesting - I pulled out 2 tubes, unscrewed 8 nuts, removed the pressure ring and here is the fuel module.

The tank turned out to be surprisingly clean. But I didn’t like the FLS at all.

Folk tricks

A stationary device that could measure the amount of fuel in the tank with an accuracy of up to a liter is not included in any of the most complete configurations of modern cars. But among car enthusiasts and specialists, on automotive forums, you can find a lot of advice on determining these residues: from rocking the car to evaluate the sound (the less gasoline, the louder the splashes) to weighing it and comparing it with the weight in the owner’s manual. One of these original algorithms for measuring fuel residues is to drain it from the tank into a measuring container, and then pour it back into the tank.

Of course, there are more reasonable methods that are suitable in road conditions.

The whole truth about the fuel consumption of Lada Priora

Fuel consumption of the Lada Priora is an important indicator of the technical condition of the car. Standard engines burn up to 9-10 liters of gasoline in urban conditions, and on the highway at a calm pace the car requires about 6 liters of fuel. Modified power units (with a modified camshaft profile or turbine) are characterized by increased consumption by 20-25%, which further increases during dynamic acceleration.

Modifications and technical characteristics of the Lada Priora car

Created on the basis of the platform of the VAZ-2110, launched into mass production in the mid-90s. last century. By changing the body panels and installing passive safety elements, it was possible to improve the consumer characteristics of the equipment.

The cars were equipped with a 5-speed manual transmission with a dry clutch. Cars with a 106-horsepower engine and a robotic transmission (electromagnetic clutch) were assembled in small batches. Regardless of the type of gearbox, torque is transmitted by axle shafts to the front wheels. The cars were equipped as standard with front ventilated disc brakes; at the rear, the factory used drums with automatic clearance adjustment.

Technical parameters of the Priora sedan car:

• length - 4350 mm;
• width - 1680 mm;
• wheelbase - 2492 mm;
• height - 1420 mm;
• ground clearance - 170 mm;
• curb weight - up to 1163 kg;
• permissible weight - up to 1578 kg;
• speed - up to 190 km/h.

Body

Actual fuel consumption of Lada Priora depending on engine type

The factory installed 4-cylinder engines with a distributed injection system and catalytic converters on Priora family cars:

• basic 8-valve 81-horsepower VAZ-21114 with a volume of 1.6 liters (later they began to use the VAZ-21116 with a power of 90 hp);
• improved VAZ-21126 with a capacity of 98 hp. With. with a gas distribution mechanism with 16 valves;
• modernized VAZ-21127, developing 106 hp. With.
• for sports modifications, a 1.8-liter VAZ-21128 with a power of 123 or 130 hp was offered. With. (depending on cam profile and control unit).

All power units are designed to use gasoline with an octane rating of at least 95 units.

Some vehicles were equipped with manual air conditioning (not offered on vehicles with the base engine). The efficiency parameters of Lada Priora engines declared by the company are indicated in the table (standards may differ depending on the year of manufacture, since the plant used different test methods).

Engine

Real fuel consumption of Lada Priora per 100 kilometers in different conditions

When operating a Lada Priora car, owners are faced with the problem of increased fuel consumption in city traffic. On the highway, many drivers manage to meet their passport data. The reason for the discrepancies is the difference in traffic density at the test site and city streets. In addition, to obtain the minimum consumption in the city, testers move along flat sections of the road without traffic lights or traffic jams and fill the tank with fuel that meets the standards, which is unattainable in real-life conditions.

With sensor

If the dashboard does not support the test mode capabilities described above, the problem of monitoring the amount of gasoline in the car’s tank can be solved using a special wireless sensor installed directly in the gas tank.

A modern device runs on a battery with increased autonomy (up to five to seven years!) and is capable of storing data on changes in fuel level for an average of two months in the built-in memory. The fuel level can be read remotely at any time using a special device that recognizes a radio signal.

Reasons for increased gas consumption of Lada Priora

Economical fuel consumption is hindered by:

• air conditioning or open side windows;
• operating the car in winter in a torn mode;
• driving with a fully loaded cabin or trailer;
• low tire pressure or using winter tires in summer.

Car color

The color of the car affects the heating of the interior in the summer. Studies have shown that light-colored equipment consumes 0.5-1% less fuel due to faster cooling of the air by the air conditioner and less load on the compressor. The resulting difference lies within the statistical error, so the color of the car body does not affect the average fuel consumption. Open side windows and deflectors have a greater impact on fuel costs (increased aerodynamic drag leads to the burning of an extra 1 liter of gasoline per 100 km).

Riding in winter

When starting the engine in subzero temperatures, the thickened oil has increased resistance to crankshaft rotation, and to maintain normal combustion of the mixture, additional fuel is supplied to the cylinders. As it warms up, the fluidity of the lubricant approaches the standard value, and the control unit gradually leans the working mixture. Efficiency in winter is negatively affected by the condition of the road surface, which causes slipping of the drive wheels, as well as a decrease in speed in city traffic due to traffic jams.

If the car is used for short trips, then the engine constantly runs on a rich mixture, since the cooling jacket does not warm up completely while driving. Some drivers do not wait for the interior and windows to warm up while idling and begin to increase the crankshaft speed, which leads to the burning of excess fuel.

In winter, consumption is 1-2 liters per 100 km higher than in summer.

Car load

As the load increases, the weight of the vehicle increases, which requires additional fuel to accelerate and maintain the required combustion rate. Operating a machine with a trailer also has a negative impact on efficiency. The installation of luggage bars and a trunk for transporting things on the roof of the body has a negative impact on fuel costs. A loaded car consumes 15-20% more gasoline. As the speed increases, the difference increases.

Tire influence

The Lada Priora uses pneumatic tires designed for wheels with a diameter of 13 to 15″. Tire size does not have a big impact on efficiency. It is not recommended to use winter tires in summer. At positive ambient temperatures, the rubber mass with increased softness provides additional resistance to movement. Additional disadvantages of winter tires in summer are noise and increased braking distance, which leads to accidents.

When operating the machine, it is necessary to maintain the tire pressure recommended by the manufacturer. When driving on flat tires, resistance increases, which leads to increased fuel consumption and premature tire wear. Please note that tire pressure depends on the load level of the passenger compartment (information on parameter values ​​is given in the factory operating instructions).

Body geometry VAZ 2112 slip dimensions

To independently solve the problem of restoring parts of a VAZ 2112 car, you need to have the geometric dimensions of its body. In professional workshops, these parameters must be taken into account, and they are individual for each machine model. Violation of body geometry must be eliminated, since it significantly reduces the safety of driving such a car. From this article you can learn important information about the indicators on which high-quality repair of the VAZ 2112 body depends.

The influence of body geometry on handling

During the operation of a VAZ 2112 car, sooner or later deformation of body parts occurs. Safety on the road and ease of operation depend on the level of their wear.

VAZ 2112 has been produced since 1999. The car body of this model is similar to the 2110 modification, the difference is that the first is slightly shorter than the second.

The steering wheel makes turns easier and faster.

Model 2112 is characterized by a sporty character. It combines the winning parts of the 10 with the estate rear seat from the 2111, making the car much roomier and more maneuverable. The ability to transform the rear seat allows, if necessary, to significantly increase the volume of the interior. Improved handling characteristics have simplified the process of entering a turn, which has significantly increased the level of safety for road users.

The VAZ 2112 has several modifications, for example, model 21123 is characterized by an original design of the hood and bumper, which allowed the car body to become popular among many car enthusiasts. After some time, the VAZ 2112 had a new grille model, and the hood took on a standard look.

Geometric dimensions of the “two-piece”

VAZ 2112 is one of the most popular models among the cars produced by the domestic automotive industry. It is relatively inexpensive, has a good design and different body styles.

The main geometric dimensions of the body of this car are as follows (in mm):

• length – 4170;
• width without mirrors – 1680;
• height – 1435;
• width with mirrors – 1875;
• rear door opening diagonal – 1320;
• short diagonal of the rear side window frame – 230;
• the distance between the center of the upper beam of the rear door opening to the middle of its lower beam is 1050;
• the long diagonal of the rear side window frame is 710.

The rarest body type of the 2112 is a coupe, or three-door hatchback. This is a sports model, it stands out from others, which are monotonous in terms of the geometric dimensions of the body. It was the design features of the VAZ 2112 coupe that allowed the model to become in demand at one time. However, after ten thousand examples of the 2112 coupe were produced, production ceased, so it is considered a rare model.

Several modifications of the VAZ 2112 were equipped with hatches, which greatly increased the comfort of the driver and passengers on the road. The geometric dimensions of 2112 made it possible to equip the car with many additional functional capabilities.

Body parts most susceptible to deformation

Sharp braking or untimely start provoke, first of all, damage to the bumper. If it is insignificant, then during repairs it is possible to achieve the performance of standard geometry. In the presence of complex deformations, this cannot be done, so it is easier to replace the damaged body part with a new one.

If the owner of the car does not take enough care of the condition of the body, then those parts that have close contact with the road surface are quickly eaten away by corrosion. And repairing the hood, doors and hidden body parts instead of timely prevention is already more difficult and expensive.

The question arose about replacing the TV (s/o) with a VAZ-2110, as there was great sadness. Like everyone else, in order to save money, as well as gain experience, it was decided to do it yourself. The question arose about the geometric dimensions of the engine compartment. I found a couple of diagrams on the Internet

Effective methods to prevent the problem

The main ways to reduce fuel consumption on the Lada Priora:

• use A-95 grade fuel; when refueling with A-92 gasoline, consumption increases by 7-10%, which covers the difference in price with a margin;
• use all-season motor oil on a synthetic or semi-synthetic basis, appropriate to the climatic conditions;
• warm up the engine in place for no more than 1-2 minutes (except for situations where a dense crust of ice has formed on the windshield);
• maintain the average speed on the highway within 90-95 km/h;
• periodically (every 40-60 thousand km) wash the fuel injection nozzles;
• avoid sudden acceleration and use engine braking on descents;
• do not install additional shields on the body that increase drag (for example, hood covers or deflectors around windows);
• Before driving, check the tire pressure and inflate the tires;
• check and adjust the angle of the front wheels;
• do not operate the car unnecessarily with a luggage carrier mounted on the roof;
• do not drive a car with damaged or removed bumpers;
• Periodically check the condition of the rear brake mechanisms; jamming of the parking brake leads to an increase in movement resistance.

It is necessary to maintain good technical condition and carry out timely maintenance:

• Worn spark plugs not only make the engine difficult to start, but also have a negative impact on fuel efficiency.
• Due to misfires, part of the mixture is thrown into the cavity of the converter and burns, destroying the ceramic filler.
• As the throughput of the catalyst decreases, the engine power drops, and an incorrect signal from the oxygen concentration sensors leads to an enrichment of the mixture.

Please note that Priora series cars are equipped with a diagnostic connector and an orange Check Engine warning lamp located in the instrument cluster. The indicator turns on when a malfunction is detected in the ignition or fuel supply systems. To carry out diagnostics, you need to connect a scanner or adapter paired with a laptop or smartphone. The read error codes are deciphered, which allows you to quickly identify the faulty sensor or component.

How to check the geometry of a car body

The opinion that the absence of deviations in the car's wheel alignment indicators can serve as confirmation of the correct body geometry is erroneous. Body diagnostics is a separate procedure that requires special stands and stocks.

Using such devices, using control points, you can check the conformity of the dimensions and diagonals of the engine compartment, trunk, doorways, as well as the distance between side members, reinforcements, load-bearing body parts, etc.

There are three options for checking body geometry:

• Carrying out measurements of distances between control points. This type of diagnostic allows you to quickly check the correctness of the geometry both before starting repair work and during its implementation. Such measurements are carried out using a regular tape measure or a special ruler.
• During comparative measurements, the correspondence of the distances between symmetrical points located on opposite sides of the body is analyzed. This type of test is distinguished by its versatility and ease of diagnosis of body damage. As a rule, experts compare the length of the diagonals between symmetrical points of the body. In this case, you can compare the measurement data on the damaged and intact sides of the car.
• In three-dimensional measurement, the spatial location of control points is determined in relation to the base planes of the body. For such diagnostics it is necessary to have special equipment.

During the measurements, a specialist can determine the extent of the main damage, determine the presence of minor defects and outline a plan for restoration work.

To measure the geometry of the body, measuring rulers are used or stationary equipment is used, a slipway, which allows you to check the distances between control points using special marks or electronic beacons.

To do this, the car is fixed on a platform using chains and measuring sensors are hung on certain points of the body. Quite often, craftsmen are faced with a situation where control points are hidden under the skin of body panels, under bumpers, under protective elements, so they have to partially disassemble the body to provide access to hidden places.

In order to restore the original parameters of the body geometry, straightening work is carried out in a car service center. This is a rather complex and multi-stage job that must be performed by qualified craftsmen who have the appropriate education, experience and a good feel for metal.

Garage specialists can tell you that they can easily restore your car after an accident using a special certified line. But such assurances should not be trusted. Without equipment such as a slipway, the geometry of the body after a serious accident cannot be fully restored. Cars repaired in artisanal conditions, as a rule, have deviations in body geometry.

We have already noted earlier that body diagnostics using control points should be carried out at least once a year or every 30 thousand km. mileage

If the car service is not equipped with special stands, then a body repair technician can use a ruler to measure the geometry of the body, but this is not a very reliable method, which can give an error of about 5 millimeters in one direction or another.

On the slipway you can measure the dimensions of such body elements as:

• luggage compartment opening;
• engine compartment;
• front and rear side members;
• window openings;
• doorways;
• sections of the front, middle, rear of the car.

To straighten the car frame, auto repair shops use hydraulic equipment and vacuum suction cups.

Complete restoration of body geometry (correction after serious accidents) can be carried out by stretching, but only if the metal has retained its characteristics.

Diode pointers are used for computer body diagnostics. This device allows you to perform all the necessary measurements without disassembling. For diagnostics, the machine is installed on a stand. The computer program will take all the necessary measurements and apply them to a virtual template of a specific car model. Such a check takes about 10 minutes, and the owner of the car receives a printout of the body with marked problem areas. The permissible error of such diagnostics is within 5 mm.

Factory and actual fuel consumption for Lada Priora

• Factory fuel consumption figures
• Actual fuel consumption of a Lada Priora with a 16-valve engine and various gearboxes
• Increased fuel consumption on Lada Priora: why?
• For your information
• Total

Nowadays, the criterion for the efficiency of a power plant is no less relevant than the number of horsepower or the time it takes to reach the first hundred. The engines of the updated VAZ line, being in good working order, fully meet modern requirements, both in terms of appetite and potential.

Components in which malfunctions increase gasoline consumption

What element can cause unstable fuel pressure, which, in turn, leads to increased consumption? As a rule, this is either a fuel pump (worn out under the influence of tiny particles from low-quality fuel), or a clogged fine filter, or a mesh in the fuel pump. The electronic brain of the car in this case is based on constant pressure, and when it decreases there is no possibility of compensation even when maximizing the time for injection of the mixture, so fuel consumption only increases.

On Priora injection engines, an increase in gasoline consumption may be due to contamination on the injectors themselves. In this case, the quality of atomization and the shape of the spray “torch” are disrupted, which results in a decrease in efficiency, the appearance of “triple”, and the useless burnout of part of the fuel in the collector.

Reasons for wasting fuel

What other component of the car can cause additional costs at the gas station? It is worth paying attention to possible flaws in the operation of the automatic transmission, where the locking clutch may, due to a malfunction, prevent you from switching to a higher gear, which is the most economical. Do not forget about such an option that is available on Priora cars today as “cruise control”

What effect does it give? This system maintains vehicle speed automatically. During operation of the mode, there is a quick transition to a higher gear and the movement by inertia is actively used, which gives significant savings on gasoline for some motorists

Do not forget about such an option that is available on Priora cars today as “cruise control”. What effect does it give? This system maintains vehicle speed automatically. During operation of the mode, there is a rapid transition to a higher gear and the movement by inertia is actively used, which gives significant savings on gasoline for some motorists.

Factory fuel consumption figures

The average fuel consumption for a Priora 16 valves (98 hp) with manual transmission is 6.9 liters per hundred kilometers. Until recently, Priora, which was the flagship model, armed with 106 hp, was no less economical - 6.8 liters per “hundred”. Updated advanced configuration with 106 hp engine. and a five-speed automatic transmission, it has the lowest consumption in mixed mode - 6.6 liters per 100 km.

It is no secret that the most economical mode is driving on the highway at a speed of about 90 km/h. Under these conditions, the on-board computer will show the minimum figures for the current consumption per “hundred”:

• 5.5 l. – for 1.6 l variants. (98 hp + 5MT and 106 hp + 5AT);
• 5.6 l. – for configuration with a 106-horsepower engine and manual transmission.

The bustle of the city does not characterize the efficiency of any engine from the best side. However, for the flagship VAZ series, the balance of energy consumption is normal:

• 8.5 liters per “hundred” (106 hp + “automatic”);
• 8.9 liters per 100 km (106 hp);
• 9.1 l/100 km (98 hp).

Main differences from LADA 110[edit | edit code]

Priora is a deep restyling of its predecessor, the VAZ-2110. Over 950 fundamental changes[12] were made to the design and more than two thousand new parts were used (almost the same as when creating a completely new model).

Exterior

: front and rear fenders, hood and trunk lid, lighting equipment with fog lights, bumpers, radiator trim, ornamental moldings and alloy wheels, external door handles (since 2008).

During its development, of course, it was possible to eliminate the most serious mistakes the designers made when creating the “tenth” family. In particular, the clearly “broken-off” boundary between the roof and the rest of the body in the area of ​​the C-pillar, which is completely absurd for a small and clearly wedge-shaped sedan, is a thing of the past [13] - this transition has now become smoother; the repeatedly criticized and no less ridiculous in shape [13] rear wheel arches became a thing of history, replaced by more aesthetic ones; The single strip of rear lights from side to side, meaningless for such a compact and narrow car[13], has also disappeared, replaced by two lights located on the sides of the trunk lid and elongated in a vertical plane, which visually increases the width of the car; Other, less pronounced errors in the proportioning of individual elements of the sidewall, plastic and design were also corrected, which, in general, made it possible to largely move away from the awkward image of a “pregnant antelope,” as the car of the previous series was immediately dubbed by the people. More modern lighting technology and elements such as a spoiler built into the trunk lid also significantly “rejuvenated” the appearance of the car. Compared to the previous model, improved technologies for assembling components and mechanisms have made it possible to reduce the gaps between body elements by half, and the bumper-fender-headlamp (lantern) interfaces are now as if drawn. In general, the overall design of the car goes back to the appearance of the “ten”, created in the late eighties in line with the trends of the “biodesign” trend that was popular at that time.

Anti-corrosion protection has been significantly enhanced, galvanization is used, and any type of body is given a 6-year guarantee against through corrosion[14].

Interior

: developed with the participation of designers from the Italian studio Carcerano[15], an instrument panel with a trip computer, a silver console trim with an oval-shaped clock, an armrest with two niches for small items, higher quality upholstery, a multiplex control system for electric drives in the doors, mirrors and actuators ( including the trunk), driver airbag (in all trim levels), front passenger airbag (Lux trim level), windshield and rear window seals, sound insulation, energy-absorbing front door inserts (since 2009) and “dashboard”, allowed to bring it up to the modern level interior design and increased the level of equipment, comfort and safety. The interior space remains unchanged from the previous model. Among the shortcomings, one can note the short length of the front seat slides, as a result of which a tall driver (more than 175-180 cm) may feel cramped; there is no full height adjustment of the seat; the steering column is only adjustable in height.

Power unit

: VAZ-21116 engine with a power of 90 hp. With. (8 valves) or VAZ-21126 with a capacity of 98 hp. With. (16 valves).

The VAZ-21116 engine practically produces 102-107 hp. With. (indications obtained from unofficial bench tests). The VAZ-21126 engine has been significantly modernized compared to the previous 21124, and the main way of its improvement was the introduction of foreign-made components instead of domestic ones that never reached an acceptable level of quality - in particular, a significantly lightweight ShPG of foreign production from Federal Mogul, a timing belt and a tension roller from Gates were used , with a declared resource of 200 thousand kilometers. The compression ratio was increased to 11 by installing a thinner cylinder head gasket (due to the increased compression ratio, the factory manual required the use of gasoline with an octane rating of at least 95). Many other modifications and improvements can be noted, as well as a reinforced clutch, a vacuum brake booster of increased diameter, and a gearbox drive mechanism with closed bearings. Installation of gasoline engines 21128-26 and 21128-27 with a working volume of 1.8 liters and a power of 123 hp. and 130 hp produced as a tuning of Togliatti.

At the moment, only two VAZ-21116 90 hp power plants are installed. eight-valve 1.6-liter engine and VAZ-21127 106 hp. and a five-speed manual transmission[16].

Chassis

: despite the modernization of the front suspension struts with barrel springs, in general, its design with straight forged arms and diagonal reaction rods resting on them (called braces) instead of modern L-shaped arms today seems outdated; New shock absorbers are used in the rear suspension; gearless electric power steering (options with power steering are also available), a more efficient braking system with new ABS and BAS systems (BOSCH 8.1). Front and rear anti-roll bars are installed. The rear brakes are drum brakes; according to the manufacturer, they are sufficiently effective.

Optional equipment

: alarm system with remote control (mono key), immobilizer, audio preparation, standard acoustic system in some trim levels.

A number of trim levels are equipped as standard with air conditioning with climate control, heated windshield and rear windows, heated front seats, light and rain sensors, parking sensors, and electric windows on all doors.

Actual fuel consumption of a Lada Priora with a 16-valve engine and various gearboxes

An experienced owner of any car probably knows that achieving ideal fuel consumption indicators is practically impossible. Thus, in winter and in urban conditions this figure shows a particular tendency to increase. In the warm season and on suburban highways, fuel consumption can decrease even below the declared level.

You can summarize the real indicators of mixed fuel consumption on three modifications of the Lada Priora with 16 valves as follows (in terms of “per hundred”):

• winter/city – 12-14 l;
• summer/city – 9-11 l;
• winter/road – 8-9 l;
• summer/track – 5.5-6.5 l

First of all, the possibility of achieving a low consumption of high-octane composition is determined by the 100% serviceability of all vehicle systems. However, correct driving techniques are no less relevant:

• maintain tire pressure of about 2.0 atm;
• drive with the windows closed and without a roof rack;
• adhere to a moderate pace of movement, without sudden acceleration and braking (on the highway - 80-90 km/h);
• apply engine braking;
• warm up a cold engine on the road;
• fill only with 95-grade gasoline;
• drive with the climate control switched off.

Increased fuel consumption on Lada Priora: why?

Quite often, an unreasonable increase in “appetite” is associated with malfunctions of elements of the electronic engine control system. The most vulnerable components involved in calculating the optimal mixture composition are:

• throttle position sensor (TPS), mounted in the throttle body;
• coolant temperature meter installed in the cylinder block housing;
• oxygen sensor (lambda probe), located in the exhaust manifold housing;
• mass air flow sensor (MAF), mounted in the pipe supplying air to the throttle;
• Idle air regulator (IAC), mounted in the throttle assembly.

Faults of this kind are diagnosed using special hardware and eliminated by replacing sensors with known good ones. Installing a new sensor with an incorrect code may cause an increase in “appetite”.

However, other reasons may also contribute to the increase in fuel consumption on a Priora with a 16-valve engine:

• low and unstable pressure in the fuel system, indicating clogged injectors, low fuel pump life, clogged filters in the system;
• clogged catalyst, causing the preparation of an enriched mixture;
• a dirty air filter, which not only disrupts the operation of the mass air flow sensor, simultaneously reducing its service life, but also provokes the occurrence of the phenomenon of “air starvation”;
• cold or constantly overheating engine (especially important when the thermostat is not working).

Fuel consumption may increase due to air leaks in the power system. Often the place of “unwanted recharge” is the fittings located on the back side of the sound-insulating plastic motor casing with the inscription “16 VALVE”. By placing plugs on the brake cylinder bleeder fittings on the components in question, you can prevent air leaks.

VAZ 2170 | Fuel tank ventilation

Fuel tank ventilation

• Attached to the fuel filler neck is a vent hose that is attached to the top of the fuel tank level sensor. Air is vented through this hose when fuel is added to the tank.
• A thin ventilation hose conducts the resulting vapors to the activated carbon container.
• While driving, air flows through this hose when the fuel level decreases, which prevents the formation of vacuum in the tank. Therefore, when installing the tank, pay special attention to ensure that the hose is not twisted or pinched.

The illustration shows the important elements of a closed vapor recovery system. At a certain coolant temperature and engine load, the diaphragm valve (1) opens, to which reduced pressure is transferred from the intake manifold, and a vacuum is also created in the diaphragm valve (2). As a result, fuel vapors collected in a container with activated carbon (picture on the right) are sucked through the intake manifold into the combustion chambers. The activated carbon container is located on the right wing.

Activated carbon container

To protect the environment, the tank ventilation hose on Renault 19 petrol models with a controlled catalyst is connected to a container containing activated carbon. This container is located behind the mudguard in the right wing. When the engine is not running or at idle, gasoline vapors accumulate in this tank and then enter the engine combustion chamber when the engine load increases or the speed increases. The solenoid valve, which receives a command from the injection and ignition control device, is responsible for supplying fuel vapor to the working mixture. When the engine load is appropriate, this valve opens a reduced pressure hose to the intake manifold or engine ventilation system, causing fuel vapor to be pumped out of the activated carbon container.

Checking the ventilation system

If the Renault 19 overturns, no more than 30 g of fuel per minute can flow out of the ventilation pipe. There is a safety valve located near the tank filler neck in the right wing.

This valve is connected through the filler neck vent hose to the tank. The safety valve is located in such a way that even with very strong inclinations, the outlet remains closed. There is also a valve inserted into the filler neck of the tank to prevent overfilling. If the tank overfills, the overfill valve opens and releases excess pressure through the ventilation hose into the activated carbon container.

Checking the safety valve

For your information

• When estimating the actual amount of fuel consumption, it is advisable to follow the generally accepted method: fill the tank full, reset the odometer, drive a certain number of km and fill the tank full again, while simultaneously noting the amount of liquid filled. The required value is found by dividing liters by kilometers traveled.
• The on-board computer in mixed mode, after resetting, starts counting from 19.9 l/100 km.
• To visually assess consumption, you should “monitor” the current indicator in 4th and 5th gears during quiet driving.

Total

The factory fuel consumption figure for Priora with 16-valve engines is 6.6-6.9 liters per mixed “hundred”. In reality, the appetite ranges from 8 to 14 liters. in winter and 5.5-11 l. in summer.

Increased fuel consumption can be caused by malfunctions in the fuel system, in the ECM, a clogged air filter, a clogged catalyst, incorrect operation of the air purge valve, or air leaks. Tire pressure and driving style also determine energy consumption.

Getting rid of unnecessary things

Fuel consumption is directly affected by the operation of additional headlights

Many Priora drivers pay extra at gas stations because of their own laziness, because they often carry unnecessary cargo in the trunk, forgetting that an extra centner inside the car increases the average fuel consumption per 100 km per liter. The same should be said about those who, after using the trunk after trips, do not remove unnecessary pillars from the roof, increasing aerodynamic drag. Experts believe that you should not use the following nodes unless absolutely necessary.

because it has been established that for every hour of heating, for example, the rear window, about 100 g of gasoline is consumed. Fans of “body kits” should also think about the fact that additional “beauty” can increase costs when refueling a Priora.

Those owners of a Priora sedan car who do not follow the manufacturer’s recommendations regarding the choice of tires and wheels of a certain configuration not only risk their health and life on the road, but can also increase their fuel costs. This is due to the fact that, for example, wide wheels provide greater aerodynamic resistance than narrow ones, so in the first case more gasoline is consumed. In addition, a significant increase in consumption (about 5%) is caused by an incorrectly set wheel angle.

Checking the angle of a Priora car is carried out on special stands, in running order. In this case, the camber can be 0 degrees ±30', toe 0±1 mm at a longitudinal inclination angle of the turning axis of 1 degree 30'±30'. With the correct setting of this parameter, fuel costs are reduced, which is especially noticeable when driving long distances.

https://www.youtube.com/watch?v=_87QPOCMIGc

How many liters is the tank in the Priora?

What is the volume of the Priora's fuel tank?

Hello. There's a problem and no one can help. So, I stopped at a gas station and filled the car with 10 liters of gasoline (there were about 5 liters left in the tank, the light was on). Leaving the gas station.

Hello. On my Priora, the gasoline gauge on the instrument scale has deviated and points up. Please tell me what this could be? Lada Priora, sedan, 2009.

Tell me, is it possible to drain gasoline from the Priora tank? How can this be done? I filled it with low-quality gasoline and want to pump it out.

The gas tank of the Priora (VAZ 2170, 2171, 2172) holds 43 liters of fuel . Its article number is 21101-1101007-00, like cars of the tenth family (VAZ 2110,11,12). The gas tank from the eight and nine is also suitable - 21082110101370. In general, the Priora’s tank is exactly the same as that of the eight and ten, with the same volume. But the tank from the VAZ 2114 will no longer fit on the Priora.

When the fuel shortage light comes on, there are 6-8 liters left in the tank. But it’s better not to bring the remaining gasoline to 6 liters, if there is an injector, it will begin to grab dirt and clog the injectors. Therefore, when the petrol pump light comes on, it is advisable to find the nearest petrol station within 20 km.

The reserve lamp lights up in such a way that the owner can drive another 50-70 km. However, on the forums you can find cases where Priora, after the “fuel reserve” indicator appeared, at a speed of 90 km/h and an average consumption of about 5.5 l/100 km, drove a maximum of 147.7 km (until the moment of traction failure and complete consumption of gasoline).

According to the marks on the scale, the picture is approximately the same as in this photo:

In this case, as shown in the photo, each large mark on the gasoline level in the tank corresponds to 10.75 liters.

In general, Prior owners have proven in practice that if you fill it right up to the neck, up to 45-47 liters of gasoline can be placed in the tank.

Below is a table in which, taking into account factory data, the consumption (city/highway/combined cycle) and power reserve on a full tank of 43 liters are indicated. The data applies to a Priora with a 16-valve 98 hp engine.

On average, a full tank of Priora lasts for 450-500 km, and if you drive only around the city, then from 280 to 350 km at one gas station before the cutoff.

A 16-valve engine with a power of 106 hp, which is paired with a 5-speed manual transmission in the combined cycle, consumes 6.8 liters per 100 km. But the same engine with a five-speed automatic consumes 6.6 liters of gasoline. In general, consumption figures differ slightly depending on the configuration. On the highway this is practically not noticeable, but in the city there is a difference.

along the route are as follows:

• for 1.6 l 98 hp (5 manual transmission) - 5.5 l/100 km;
• for 1.6 l 106 hp (5 automatic transmission) - 5.5 l/100 km;
• for 1.6 l 106 hp (5 manual transmission) - 5.6 l/100 km.

In the city, the consumption picture is correspondingly different:

• for 1.6 l 98 hp (5 manual transmission) - 9.1 l/100 km;
• for 1.6 l 106 hp (5 automatic transmission) - 8.5 l/100 km;
• for 1.6 l 106 hp (5 manual transmission) - 8.9 l/100 km.

Also, many owners are faced with a problem when the needle, after filling a full tank, shows the correct level, and after driving 200 meters, it jumps to “half tank”. Most often the problem is a malfunctioning fuel level sensor. After checking the sensor, symptoms can only be treated by replacement.

By instruments

If the fuel indicator is working, the first solution is to navigate it. For example: the volume of the tank is 50 liters, 10 divisions are conventionally marked on the scale, which means that each “beats” 5 liters. When estimating the remaining fuel in this way, remember that the result will be approximate, and pay attention to the location of the car: the car must be strictly horizontal, otherwise the indicator will not correspond to reality.

More accurate readings can be obtained using a special probe. The gas tanks of some old cars were supplied with it from the factory, but by analogy you can do it yourself, having studied the topic well. The distance between the cutoffs depends on the size and shape of the tank; the length of the ruler must be at least one and a half meters, and the material from which it is made must not contain metal and not create sparks.