Fuel pump VAZ 2110 injector 16 valves characteristics

The topic is open to those who are looking on the Internet for information about the technical characteristics of the Bosch fuel pump for the VAZ 2110. If you were looking for information about the fuel pumps for the VAZ 2110 Bosch, then this is an incorrect request.

Fuel pumps most often mean high-pressure fuel pumps, also known as injection pumps, and this is closer to diesel fuel systems. Gasoline engines have fuel pumps - mechanical and electric.

On the VAZ 2110, the Bosch electric fuel pump is probably the most popular fuel pump, because it has a relatively low price and universal dimensions, as well as availability in most stores.

Let's look at the following topics:

• Fuel pump VAZ 2110 Bosch performance/pressure

• Characteristics of Bosch fuel pumps and specifically the Bosch fuel pump 0580453453

Mechanical fuel pump VAZ-2110 - characteristics and design

This type of mechanism is used exclusively on cars with carburetor engines. This VAZ-2110 fuel pump has its own mechanical drive from the camshaft, and it is located on the internal combustion engine.

By its design, this element is one of the types of piston and includes the following parts:

1. Two-piece body with a lid on top.
2. Diaphragm. It is installed between the lower and upper parts of the housing.
3. Return spring.
4. Stock. It is rigidly connected to the diaphragm.
5. Discharge and suction valve. It is located at the top of the pump.
6. Mechanical drive.
7. Mesh filter.

The drive of this device, as we said earlier, is carried out from the camshaft eccentric. When this element rotates, the part moves the rod with the diaphragm down, and the spring force is overcome. The volume of space above it increases, and gasoline, due to the resulting vacuum, enters the pump through a separate valve from the gas tank. The discharge valve is closed.

The main operating mechanism of the pump is the diaphragm. It consists of two membranes, between each of which there is its own gasket. The diaphragm is connected to the rod. The latter interacts with the mechanical drive parts. There are different pump drive schemes. For example, domestic “tens” use a design that consists of a pusher and a lever with a balancer. Foreign cars use their own technology with a double-arm “rocker arm”.

Product selection

AvtoVAZ offers an original fuel pump for 4,000 rubles. The original catalog number is 2112-1139009 . But many car enthusiasts buy and install cheaper analogues instead of the original.

Analogs

Bosch fuel pump.

A non-original part is often no different in quality from the original. So, if the vehicle owner wants to save money, then you can install a non-original part. Let's consider the main offers of analogue companies:

1. Fenox EFM33006O7 - the cost of such a part will be about 3,000 rubles.
2. Bosch 0 560 454 035 - as they say, I took BOSCH, and ... (go ahead).
3. Ween 192-0262 – the price on the spare parts market will be approximately 3,000 rubles.
4. Pekar 2112-1139009 - will cost a little more than the previous two, the average price is 3,500 rubles.
5. ATS 53453 - they praise, but the price tag is good. We know they put one like this as a replacement for expensive originals on Peugeot.

   
   ATS fuel pump.

Fuel pump for VAZ-2110 - characteristics

The main characteristics of this device are the pressure level and housing dimensions. The most popular units today are German-made Bosch units. The pressure of the VAZ-2110 fuel pump is about 2.8-3.8 Bar. The characteristics of a fuel pump itself are rarely determined by the diameter of the housing; most often it is the length.

The dimensions of this part can be very diverse. Depending on the model and brand of the manufacturer, this parameter is 65, 90 or 105 millimeters. And these are not all the sizes of VAZ fuel pumps.

In addition to the length, these devices differ in the location of the terminal chips. The mesh itself, in terms of its seats, practically does not differ by brand. By the way, the length of the gasoline pump itself determines its performance when the fuel level in the tank is low. That is, when choosing, you need to pay attention to longer elements. By the way, the diameter of the housing can be varied using a gasket made of gas-resistant rubber.

What should the pump power be?

ATTENTION! A completely simple way to reduce fuel consumption has been found! Don't believe me? An auto mechanic with 15 years of experience also didn’t believe it until he tried it. And now he saves 35,000 rubles a year on gasoline! Read more"

Of course this is not true. Let's say there are two different cars. One has a 3.5 liter engine, the other has a 1.6 liter engine. In addition to the difference in volume, the engines also differ in the number of cylinders. One installation has six cylinders, the other has four. Question: Do the pumps require the same performance to supply both units with fuel fluid?

It is clear that the pressure and performance of the superchargers installed on these machines will be different. Even if the pumps are similar in appearance, their power will not be the same. That’s what it says on them: on one device – 3.8 bar at 90 liters per hour, on the other – 2.8 bar at 60 liters per hour.

There are known types of fuel pumps with even greater performance. For example, in the Bosch catalog there are devices capable of pumping 160 liters per hour or even more.

In general, it is generally accepted as follows:

• on pumping devices in which the pressure is not standardized (used for single injection) - about 1 bar;
• on pumps for electronic injection - 3-4 bar;
• on mechanical injectors - 6 bar.

There is also an opinion that for fuel backflow systems there should be a productivity of at least 2 liters per minute.

The performance of the pump depends solely on the car model. The unit simply must be able to provide the required pressure and productivity. So, if the car reaches its maximum speed (let’s say 320 km/h), it will consume about 40 liters of liquid per hundred kilometers. Using simple mathematical calculations we get 120 liters/hour. And a unit with less productivity will no longer be practical here.

For the most part, a pump is installed on cars taking into account the fact that it will provide a reserve and exceed the optimal calculated consumption by 60-70%. This is a prerequisite, otherwise the problem will not be long in coming. And if you use a unit with similar characteristics on different engines, then this reserve will not be provided, the power plant will begin to detonate, etc.

We are talking about pumps that provide normal pressure. The injection pump has absolutely nothing to do with it.

Electrical analogues

What's so special about this fuel pump? The VAZ-2110 (injector) is equipped with just such devices in the fuel system. The electric pump is used on gasoline engines with distributed fuel injection. In turbodiesel and diesel engines, this element is used in the low-pressure circuit to preliminary circulate fuel to the high-pressure pump. By the way, electric pumps on gasoline engines with direct injection of Common Rail fuel operate on the same principle. The electric mechanism creates a pressure of about 0.3 MPa (in power plants with direct injection - about 0.7 MPa). The use of mechanical pumps in such systems is not recommended due to the low pressure when supplying gasoline.

Centrifugal

Due to their design features, these two pumps are installed directly in the fuel line. Today's injection devices use centrifugal-type mechanisms. Such pumps provide a uniform supply of gasoline and practically do not make any noise. But they have their limitations in terms of pressure and performance.

The condition and serviceability of the fuel pump affects the stability of the engine, fuel consumption, and engine starting. It is important to constantly monitor his condition. The VAZ 2110 fuel pump module has a list of typical faults characteristic of parts of this type.

Where is he located?

This device is located in the fuel line or in the fuel tank. Thanks to this placement, the risk of losses is significantly reduced due to the absence of suction lines.

The design of the electric pump assumes the presence of the following elements:

1. Electric motor.
2. Pump housed in a metal casing.

In other words, this device consists of an electric drive and a pump part. All its components are in direct contact with the fuel. In addition to the above elements, the module of this device also includes a fuel flow sensor, a fuel intake and a strainer.

And the part we are considering operates due to the presence of two valves - a check valve and a pressure reducer. The first locks the system when the engine stops operating. The second one performs the function of maintaining pressure in the system, while part of the fuel is transferred back to the inlet.

There are several types of electric pumps based on their design:

Examination

If you have any doubts about the functionality of the device, you should simply check the pressure on the ramp. It must be at least 2.8 atmospheres. Only in this way can the power system ensure the correct supply of fuel to the combustion chamber. Correct, meaning uniform, dosed and with optimal torch geometry. If it is less than 2.8 atmospheres, fuel consumption may increase. This is due to the fact that the nozzle is not able to form a torch, but simply pours liquid into the chamber. where it doesn't burn out. Hence the instability of work.

Buy only the right fuel pumps, and then a dozen won’t ruin their owners with the expense. Happy travels to everyone!

Roller

This device sucks in gasoline and pumps it through the operation of the rotor and the movement of special rollers. When the space between these two parts increases, a vacuum is created. Thanks to this, the fuel fills all the empty space. When it is completely filled, the gasoline supply stops. As the rotor rotates, this space gradually decreases and at some point the inlet port opens. The fuel leaves the pump under pressure.

Purpose and principle of operation of the fuel pump

The fuel pump is designed to pump fuel from one point to another. In a car, the role of the first point is played by a fuel reservoir - the tank, and the second - by the engine, where the pumping takes place. This process occurs at a certain pressure, which is maintained by the pump reducer, which is a very important point.

Fuel pump diagram

Fuel pumps are divided into 2 types according to the type of drive: electric and mechanical. Inside the first there is an electric motor with a mini-pump, which operates from the mains and uninterruptedly pumps fuel into the engine. The second type is becoming increasingly rare, as it is installed on carburetor cars, and operates due to the reciprocating movement of the lever.

Fuel pump diagram

Fuel pump VAZ 2110: description

The main task of a submersible fuel pump is to create pressure in the fuel rail. Due to this, gasoline is supplied in the required quantity to the injectors. The VAZ 2110 pump is located in the rear of the car, under the rear seat.

Main components:

• plastic cup - the pump is located in it;
• fuel filling chamber;
• diaphragm (separation);
• float fuel level sensor – attached to the electric motor module;
• power connection terminals;
• return spring;
• contact Group;
• mesh filter - allows you to remove suspended matter and foreign impurities;
• electric motor

There is no fuel pressure regulator (FPR). Only durable, gasoline-resistant components are used for manufacturing, which eliminates the possibility of failure due to aggressive operating conditions. Sealing of individual parts is ensured by a rubber bushing. It is not destroyed by fuel.

It is important to remember: the electric submersible fuel pump is installed only on tens with an injector. If the engine is carburetor, a different type of pump is required. The submersible module under consideration is similar in design and operating principle to a diesel injection pump. When purchasing a replacement part, you should study the characteristics: the pressure created must correspond to the nominal pressure specified by the manufacturer. If it is more, there will be an overrun. If the pressure is lower, the engine will not start.

Model selection

It is best to install an imported fuel pump on the VAZ 2110 injector, capable of delivering a performance of up to 7 atm. It will not only last much longer, but will also ensure better and longer operation of the injector and improve the quality of the mixture at the outlet of the nozzle.

You should know that Bosch fuel pumps usually differ only in length, location of terminal connectors, and sometimes in the diameter of the housing. Therefore, it is advisable to either go shopping with an old device, or make some minor modifications at home.

Bosch fuel pump

To avoid buying a fake, keep in mind that any Bosch gas pump is packaged in very durable packaging. The bag contains purified gasoline in which the device is immersed. If you smell it, it means the seal is broken, corrosion may begin inside the pump, it’s better not to buy one.

You can get acquainted with the malfunctions of the VAZ 2110 fuel pump here: https://vazweb.ru/desyatka/pitanie/toplivnyj-nasos.html

Fuel pump characteristics

The technical characteristics of the fuel pump must correspond to those required by the manufacturer. Standard:

• rated operating voltage, V – 12;
• current consumption, A – 6.5;
• productivity, l/h – 60 (at a voltage of 13.5 V and a back pressure of 3 kg/cm2);
• weight, kg – 1;
• pump length, mm – 90.

The performance of the pump purchased for replacement should not be less than required. Otherwise, the engine will “triple” and the power will decrease.

Replacement

It is necessary that the gasoline level is no more than half the volume of the tank. Next we proceed like this:

• Disconnect the negative battery;
• Removing the back seat;
• Remove the cover from the hatch;
• Disconnect the electrical connector;
• We remove the fuel supply pipe by unscrewing the fitting;
• We do the same with the drain pipe;
• Remove the clamping ring (it is secured with nuts 7);
• Carefully remove the float from the hole in the tank, remove the electric fuel pump along with the fuel level sensor;
• Using a screwdriver, disconnect the fuel level sensor;
• We remove the clamps and remove the fuel pump itself from the guides;
• Reinstalling a new Bosch pump is simple and straightforward.

You just need to consider a few points:

• If you installed not a new, but a refurbished pump on a VAZ injector, lubricate the centering bushings (WD-40 grease is usually used);
• The fuel pump with a fuel sensor is installed in the tank so that the arrow on the flange faces the rear of the car;
• Be sure to check that all o-rings are intact, but it is best to replace them with new ones.

After replacement, start the engine and check what pressure the fuel supply system produces and whether there are any leaks.

• Author: ratico19
• Print

Rate this article: (4 votes, average: 2.8 out of 5)

Malfunctions and repairs

The fuel pump fails for various reasons. Often - low quality gasoline. It is important to remember: before removing the pump, check the condition of the filter and the supply voltage at the terminals. Pump malfunctions are varied: failure of the electric motor, breakdown of the impeller, etc. The diagnostic and repair process includes the following steps:

• the rear seat and carpet are removed and the iron hatch comes off (the pump is located under it) - use a 12mm wrench and remove it from its seat with a slotted screwdriver;
• after dismantling, use a screwdriver to unscrew a pair of side screws - they hold the fuel pressure sensor in place (the float must be in good working order);
• two blocks are disconnected (supplying power) - one is connected to the bracket, the second to the motor (before disconnecting, the clamps should be released);
• the coarse filter is removed (looks like a fine mesh) - just pry it off with a screwdriver and move the lock washer;
• the electric motor is pulled out of the plastic housing - just press the plastic down (there are springs inside) and pull out the cotter pin;
• unscrew 2 screws securing the cover - after which it can be removed along with the rubber bushing;

When all of the above operations are completed, you can remove the engine itself from the housing and install another module. It is important to remember: if the rubber bushing installed in the housing is deformed or partially destroyed, it must be replaced.

Reasons for failure

In principle, he does not have a specific resource, and his condition is judged by the pressure that he creates. The main reason for failure is gasoline of unsatisfactory quality, the main fuel at our gas stations. Mechanical impurities, which must be carefully filtered out during the production process, enter the tank, and from there, everything that is not left on the coarse filter mesh goes straight into the precise pump mechanism, which causes its rapid breakdown. Therefore, it is worth replacing this very mesh from time to time, although this is not provided for in the maintenance regulations.

Signs of a faulty fuel pump:

• during operation, extraneous sounds arise, a loud howl is heard;
• The engine power has sharply decreased, the engine starts on the third or fourth attempt (with a working battery and starter).

To check the pressure in the system, a pressure gauge is connected through a fitting. If it is more than 3.3 kg/cm2, the pressure regulator requires replacement. At low pressure (less than 2.8 kg/cm2), the reason may lie in a clogged fuel filter. The pump activation relay sometimes simply floods (it is advisable to replace it). If there is no voltage coming to the pump terminals, the fuse has failed.

It is almost always not advisable to repair the submersible fuel pump on a VAZ 2110. It’s easier and more reliable to replace it entirely. This will avoid sudden breakdowns on the road.

Source

Bosch fuel pump performance - from 3 to 3.8 bar

The manufacturer Bosch produces its own fuel pump for each type of fuel system. Why, after the original fuel pump fails, do people install a Bosch fuel pump from a VAZ 2110? How does the pressure and performance of the fuel pump compare with the original one? If you put it with high pressure, will the flow rate increase?

Consumption does not increase due to the performance of the fuel pump, since on cars the return line is activated and excess fuel is returned to the tank, there is also a fuel pressure regulator, from the name it is clear, I think what function it performs.

Consequently, there was a 2.8 bar pump, they installed a Bosch VAZ 2110 fuel pump with 3.8 bar and it will only get better. Fuel consumption may increase if the fuel pump does not create sufficient pressure in the rail and the injectors begin to pour gasoline, which does not burn, rather than spray.

Diagnosis of the causes of malfunctions and replacement of the VAZ 2110 fuel pump

A fuel pump is essentially an electric motor that sits in a vehicle's fuel tank and pumps and delivers fuel to the injectors for injection into the combustion chamber at high pressure.

As a component and part of a car, the fuel pump is one of the important and finicky components of the car. With its help, fuel is supplied to the injector.

If used incorrectly, failure of this part can lead to consequences ranging from inoperability of the fuel system (especially during a long trip) to costly repairs of the entire engine power system.

Parameters of the Bosch model 0580453453

If you are interested in a VAZ 2110 Bosch fuel pump, the characteristics of the models will differ in the length and sometimes in the diameter of the body. The diameter of the body is adjusted using a gasket made of gas-resistant rubber. Also, devices may differ in pressure, placement of chips on the terminals. The device grid does not differ in the number of seats, but may vary in shape. You can remake the chip for a terminal or install it from a VAZ car. The length of the fuel pump determines its performance when the volume of fuel in the tank is low. If it is located in a module, then compliance is required to install it. The length of the Bosch model 0580453453 is 105 mm, 0580453449 is 65 mm, and for Bosch 0580453465 this figure is 90 mm. The pump is located in the car tank, it is immersed in fuel. It contains an electric motor that drives the pumping element. A combination of these components supplies fuel under high pressure. As a result, the fuel pump is noisy and needs cooling. Therefore, the equipment is immersed in a tank of fuel, as it serves as a coolant and noise-insulating compound.

Causes of malfunction

The main causes of malfunctions of the VAZ 2110 fuel pump are the low quality of the fuel being filled, low fuel supply pressure, the regular presence of a small amount of gasoline (less than 5 liters) in the fuel tank and improper operation when starting the engine - before starting the engine, you must wait after turning on the ignition 2-4 seconds to pump fuel into the engine power system.

It is also possible that the fuel pump as a part will naturally fail, depending on the mileage of 150 - 200 thousand km. or for a period of 4-5 years, but again this malfunction depends on the operating conditions of the car itself.

Usually the factory fuel pump is replaced with a BOSCH one.

There are secondary malfunctions of the VAZ 2110 fuel pump failure - failure of the relay, blown power fuse, they are located in the fuse mounting block either under the hood or in the lower left part of the dashboard, front console, depending on the engine modification, and contamination of the fine filter mesh fuel cleaning (located directly on the fuel pump).

These faults can be fixed relatively quickly and without large financial investments. Fuel pump repairs are performed quite rarely, and the cost of repairs relative to the cost of the pump is insignificant.

How to buy a good quality Bosch fuel pump?

On the market, a Bosch fuel pump costs half as much as mine. I will provide more accurate information, the retail price of a Bosch VAZ 2110 fuel pump on the market or in unscrupulous stores is $10 cheaper than purchasing an original Bosch fuel pump.

I buy it roughly for 300 UAH, from an official supplier and I know that this is the original, and a fake Bosch fuel pump is sold for 220-250 UAH at retail.

The Bosch fuel pump is in a sealed, durable package, the packaging bag is denser than usual, you can feel it. There is purified gasoline inside the package, if you smell it, then the seal is broken, which means there is a chance of corrosion inside the gasoline pump.

Submersible fuel pumps are lubricated and cooled by fuel. Due to low-quality gasoline and additives, internal electrical mechanisms are corroded. When working dry, the brushes overheat and wear out. The service life of the fuel pump is very long.

There were foreign cars that, after more than 25 years, decided to change the fuel pump, only for the reason that it began to pump poorly, such a car was a 1986 Honda Accord 2.0. It was amazing for me to hear when my grandfather, who is also the driver of this car, told me how he tested it.

He says, I take a jar, pour some water, turn it on the battery, I see the stream is weak, and I realized that he is already old. The pump was original, I personally held it in my hands. The pressure created by the fuel pump can reach 6-7 atmospheres; the Bosch fuel pump with the VAZ 2110 operates with this power.

Troubleshooting

The main symptoms of a malfunction of the VAZ 2110 fuel pump are engine interruptions in various operating modes, lack of pressure in the fuel system, loss of acceleration dynamics, increased fuel consumption, or complete failure when trying to start the engine.

The first step is to check the functionality of the pump. When you turn on the ignition, you should hear a slight whirring sound from the pump under the rear seat for a few seconds.

If the engine is running, it is necessary to check the fuel supply pressure using a pressure gauge; the fuel supply pressure to the injector should be 3.5 - 4 atmospheres. If the sound of the fuel pump is not heard, if you have an electrical tester, you can check whether power is being supplied to the pump.

To do this, you need to remove the back seat of the VAZ 2110, the decorative cover, and the terminal from the fuel pump housing, turn on the key to crank the starter, if the tester does not receive power, you need to check the relay, fuse or wiring trace for a break! If there is power, the fuel pump needs to be replaced.

The serviceability of the relay can be checked by replacing it with a working one from the fuse box, for example the high beam headlight relay. When replacing a new relay, you need to pay attention to the manufacturer and the recommendations of a spare parts specialist in the store; it is better not to save on the cost of the relay.

Pumps and injectors from Bosch: tables

The most famous manufacturer today. Pumps from Bosch are installed on many well-known car models.

The electric fuel pump from Bosch uses a high power rating, which allows it to push fuel directly onto the injectors and into the power plant. The operation of this fuel supercharger is controlled electronically. It calculates the state of the damper, exhaust and takes into account the amount of gasoline in the fuel assembly completely in AUTO mode.

It is noteworthy that Bosch develops unique pumps for this or that brand of car. For example, for our VAZs, units with a capacity of 3 or 3.8 bar are produced. These figures are higher than those provided for by the car, however, many owners install just this option. The Bosch pump in no way affects the increase in fuel consumption, as some believe. On the contrary, fuel consumption is caused by a situation when optimal pressure is not created in the ramp, and as a result, the injectors do not function correctly - they do not spray gasoline, but simply pour it.

Thus, Bosch pumps can have different performance data. It all depends on the specific analogue. Read more in the table, which shows the types of fuel pumps by model.

Bosch pumps are also installed on the popular German BMW car in Russia. Performance also varies depending on the BMW model. Basically, it is customary to divide pumps from this manufacturer for BMW into two categories.

On injection engines, in addition to the pump performance, it is customary to talk about the performance of the injectors. This means their maximum possible throughput when open. In other words, over what period of time the nozzle is capable of supplying the maximum amount of fuel is this very parameter.

As a rule, most manufacturers, including Bosch, Siemens, Denso and Delphi, provide injector sizes in their catalogs according to Western standards, i.e., in f/h.

Here, for example, are the parameters of Bosch injectors according to the catalogue.

Forget about fines from cameras! An absolutely legal new product - Traffic Police Camera Jammer, hides your license plates from the cameras that are installed in all cities. More details at the link.

• Absolutely legal (Article 12.2);
• Hides from photo and video recording;
• Suitable for all cars;
• Works through the cigarette lighter connector;
• Does not cause interference to radios and cell phones.

The article will be of interest to those who are looking for information about the technical characteristics and performance of the VAZ 2110 gasoline pump. Gasoline engines can be equipped with electrical or mechanical devices. For the VAZ 2110 car, the electric fuel pump of the Bosch brand is the most popular, as it has universal sizes, is always available in stores and is inexpensive.

High Performance Fuel Pumps

The high pressure fuel pump must provide the required gasoline flow and maintain the required fuel pressure. When installing high-performance fuel injectors, there is a need for more fuel pumped per unit of time. The VAZ fuel pump cannot supply high-powered engines with fuel, especially turbocharged engines (most turbo engines use an absolute pressure sensor). In modern cars, the high pressure fuel pump is installed in the tank. A gasoline pre-filter is used at the pump inlet. Given the quality of Russian fuel, this filter must be changed every 2000-3000 km.

If you did not immediately change the VAZ fuel pump to a more efficient one, you will be able to understand this during engine tuning. Innovate equipment will help you with this. Of course, you will need to spend time returning to the service and replacing the high pressure fuel pump , since further adjustment is impossible if there is a lack of fuel.

In addition to the amount of fuel, the fuel pump must provide the required gasoline pressure in the fuel rail. Very often, when the VAZ fuel pump , it does not provide the specified fuel pressure. This is expressed by the fact that during normal acceleration of a car, at a certain engine speed, the car stops accelerating. Although earlier the acceleration continued at these speeds. It is advisable to eliminate this problem as quickly as possible, otherwise engine destruction may occur due to a lean fuel mixture. Our store offers high-pressure fuel pumps of submersible and external types. When using small sports fuel tanks, external fuel pumps are installed. An external high-pressure fuel pump is installed in a section of the fuel line.

When working on the fuel system, the battery must be disconnected. After completing the work, it is necessary to check the system for fuel leaks.

Selecting injectors and a fuel pump when tuning an engine.

As a rule, when tuning cars, problems with fuel supply are very often associated in one way or another with the fuel pump or injectors. Here I will describe simple but nevertheless the most effective methods for checking the fuel supply system and criteria for selecting its components.

There is an opinion on the Internet that injectors are selected solely based on the achieved engine power. Therefore, you can often read on forums phrases like “standard injectors are enough for up to 120 horsepower, Volgov injectors are enough for up to 160, and so on.” This opinion is naturally fundamentally incorrect. The forces received at the stand do not at all mean that there are “enough” injectors, and the forces not received do not mean that there are “not enough” injectors, respectively. There are known cases when engines with 560 injectors (Volga), which actually have a power of about 160 horsepower, after 15-20 minutes of driving along the highway at speeds close to maximum (usually on some kind of country trip) suddenly suddenly failed, although in “traffic light races” The engines drove great before this for 10-20 thousand km. During disassembly, all signs of mixture depletion and detonation were observed (white insulator on the spark plug, broken partitions and characteristic potholes on the displacers). In fact, there were initially not enough injectors in such engines; it’s just that when starting from traffic lights and driving in city traffic, those small areas of mixture depletion in the area of ​​maximum power speed could not have such a detrimental effect on engine operation, due to the very short duration of the engine being in this mode . The combustion chamber parts simply had time to cool down at the moment of switching. Driving along the highway with the pedal to the floor and possibly external weather factors that were not taken into account during tuning (for example, cold weather and increased air density) immediately led to a lean mixture and engine failure. To exclude this from happening in your engine, you need to know the criteria for selecting injectors: For example, injectors should always be selected with a margin of performance. This ensures that in the event of a sudden change in weather conditions or, for example, a clogging of the fuel supply system, there will be enough fuel supplied to the engine in all operating modes. The criterion for choosing performance is determined by the ratio of engine volume, the efficiency of the working process in the engine and the speed at which maximum engine power is achieved. For example, in a rotary engine, the performance of injectors with the same power indicators should be 20-30% greater than in a piston engine, since the working process in it is less efficient and the air filling is usually very high. The most reliable way to choose the right injectors is to consult with a tuner. As a rule, people who tune engines have a good idea of ​​what engine configurations have what fuel requirements. If you are tuning the engine yourself, the easiest way to select injectors is to determine the maximum air flow of the engine. To do this, you can use any diagnostic program. Take a log of the car's acceleration in 3rd gear and look at the peak value of the mass air flow (it is expressed in kilograms per hour).

Differences in dynamics due to the fuel pump

Good day! I'm interested in your opinion - if you install a higher-capacity pump on a practically stock engine - say 320 l/h instead of 180 l/h - will there be any increase in power/acceleration dynamics. As far as I understand, the pressure regulator dumps all excess into the return line, and the injectors pour a strictly allotted volume. Logically, the dynamics should not change. But maybe I'm missing something?

There may be differences - when your pump no longer pumps as much as it should, detonation is a lean mixture - the car does not drive. You install a normal pump - the mixture is normal, there is no detonation - the car drives. That's how it is. 320lch is not worth putting a regulator on the stock - you will sell it. 255lch is enough.

everything is correct, if the cards are registered for a certain amount of fuel, then that much of it will flow. the regulator will remove the excess but this is fraught with its demise

Yes, I installed here the other day Walbro 255 l/h, China instead of Yapovsky Unisia Jesc 180 l/h. As a result, the car began to jerk when hot, especially in the heat. I had to put everything back and the problem went away.

yes, ketai walbro is strong))) But I saved on the pump.

Are you sure the regulator will push through?

It is advisable even to throw a thicker wire on a 255 vallbru.

A friend has the Aeromotive. 340. For several years now. Everything is good.

Last edited by NightR >14:19.

there have been cases. And so on the verse they put the girl 320lch copes

You should install Deatschwerks, there are fewer fakes for them. Available at 265 l/h, optimal for drainage. 340 l/h at 350+

what? 340lch is enough for 500+. usual 255hp up to 500.

+1000 here you are right In my memory there have been no cases of breakdown, and the manufacturer gives a 3-year warranty

Last edited by NightR >14:21.

I think I bought it from you for the ChVN. What made me happy is that it’s a complete bolt-on, without collective farms.

Bosch 044 will definitely push through the stock regulator, maybe not right away, of course. As for my personal car, it was fitted with a Walbro pump, thinking that it was broken, I decided to install 044 and no longer crawl under the seat. We pressed the return line in 33% mode on the Valbro it presses 4 atm, in the 100% mode 6 atm (it presses to a dead end), on the Bosch in the 33% mode 10 atm. After replacing only the pump, the car started to get rich, then we changed the stock regulator to a tuning type, it’s already better, but still the car as a whole gets rich and is especially noticeable in modes when the turbine blows more than 0.5, the consumption increases sharply

As far as I know, 044 is an external one? for your own wiring and regulator, no?

You can pay for your purchase in any convenient way:

• VISA, MasterCard (no commission)
• Receipt for payment
• Sberbank Online

Tips and tricks

If it is necessary to replace the VAZ 2110 pump or after removing the pump for preventative replacement/cleaning of the mesh, after completing the reassembly and installation of the pump, do not immediately install the rear sofa and the pump cover.

Additional verification will be required before doing this. To do this, you need to turn on the ignition and determine whether gasoline is leaking from the fuel pipes. Also, the smell of gasoline in the car interior, etc. is not allowed. If this is the case, then you need to determine the cause of the leak and replace the problematic elements, tighten the tube nuts, etc.

To make the selection accurate, the existing module must be removed from the car and purchased a similar one. Also, when choosing, you need to take into account the type of engine, since the pumps are different. Before purchasing, the fuel pump itself should also be inspected, its housing should be checked (cracks, dents, and defects are not allowed).

Pump failure - how to determine the cause?

Like any part, sooner or later the fuel pump shows all signs of malfunction, or even fails altogether. It's best to replace or repair your pump before it breaks down completely. Most often the problem occurs due to the fuel pump relay. The relay is based on a fuse, which is what usually breaks.

Lift the back seat and find the chip under the trim; it is where the relay with the fuse is located. Replace the fuse with a new one and your pump should work. However, do not forget that the cause of the malfunction may be the reduced performance of your battery. This problem occurs in a VAZ 2109/2110 car with an electric pump. When a car engine is running, regardless of whether it has an injector or a carburetor, changes are always heard if there is a problem with the pump. The engine may even stall when idling.

In cars with a mechanical pump, the rod most often fails. Whether to make partial repairs or replace the mechanical fuel pump depends on the characteristics of the breakdown. As practice shows, it is enough to perform partial repairs on a VAZ 2109 car.