Hi all. As usual, the weekend was not in vain. As I wrote in previous BZ entries, the Priorka drove poorly, and this “bad” started from 3000 rpm. Then it’s as if someone is pulling on your ass. I replaced the air flow sensor, the problem did not go away. Next up was checking the fuel pump. I went to the service station and measured the pressure in the fuel rail - 2.4 atm. Not enough. I went and bought a BOSCH fuel pump (catalog number 0580453453)
.
I wanted to replace it at a service station, but the cost of replacement is more than a thousand rubles. Having once again become convinced that the cost of an hour of work in Russia is the most expensive for a service station master, I decided to change it myself. I pulled the pump out of the tank, took it home to change it... everything stank of gasoline
As they say, the most difficult thing is to remove the hose from the pump itself. This was no problem for me. I put it under hot water for 2 minutes and removed the hose.
I put this strange mechanism back together and went to put it in the car. It turned out that the rubber on the tank lid had changed in size, so I had to go get a new one.
Now there is no dullness at 3 thousand/rev, but on the contrary, it “shoots forward”. In general, the car has become more nimble.
Cost: fuel pressure measurement: 250 rubles. BOSCH fuel pump (0580453453): 2240 rub. O-ring (or whatever it’s called): 110 rubles. nuts: 45 rub. TOTAL: 2645 rub.
PS Current photos of cars
Issue price: 2,645 ₽ Mileage: 109,000 km
Fuel pump fuse functions
The Priora fuel pump fuse almost completely determines the performance of the fuel supply system.
He is responsible for the fuel injection system using the injection type of gasoline supply. Fuel is supplied using a 12V fuel pump. If the Priora fuse for the fuel pump fails, the car cannot be started. The function of the Priora fuel pump is to suck gasoline from the tank and supply it through the system to the injector intake manifold. If the fuel supply does not work, then, obviously, there is simply no way to start the engine. If you have problems with the engine, the first thing you need to do is check the fuse for the Priora fuel pump.
If the key is not turned to the start position, the fuel pump turns off after 2 seconds. Obviously, on a Priora, the fuse for the fuel pump is a buffer that takes on the full power of an unauthorized electrical discharge during abnormal operation.
Let's look at the principle of operation of the fuel pump fuse. The design of this element consists of two aluminum contacts and a fire-resistant plastic cover. If it fails at high voltage, the shell melts, which is considered a definite marker for fuse replacement.
Between the aluminum contacts there is a contact thread, which can only conduct a normalized current. For example, when marked “15A”, the current with constant amplitude cannot be higher than 15A. When large currents pass, the filament breaks and the body melts.
If we are talking about the failure of some element of the electrical equipment of the system, the inspection and repair of the car begins with diagnosing the relay and fuse box. This block in Priora is divided into three functional parts, which can be found in the following places of the car:
- The main mounting block is located on the left side near the driver's foot. The drawer opens by turning three locks 90 degrees;
- another fuse box is located near the expansion tank under the hood;
- the additional unit is located on the passenger side near his left foot.
The Priora fuel pump fuse is located in the additional mounting block on the passenger side; on the diagrams of the fuse and relay box it can be found under the designation F3 (15 A). K2 marks the location where the fuel pump relay is located. So, we figured out where the Priora fuel pump fuse is located. Now let's look at its functions.
- on-board computer;
- the relay is designed to adapt high currents at the moment of starting the fuel pump, protecting against combustion, thus, a malfunction of the relay leads to a malfunction of the fuel supply;
- fuse located next to the relay.
So, on the Priora we found out where the fuel pump fuse is located - in the additional compartment near the fuel pump relay. The main function of a fuse is to protect an electrical circuit. When high currents occur, the fuse trips and the circuit opens.
Thus, the functionality of all other elements of the system is maintained. Protection can work at any time. The reason is usually current surges or overheating. In general, if the fuel pump fuse fails on a Priora, it protects the on-board computer from power surges.
They are a small connector that can be installed without additional fastening. Replacing it, if you have experience, takes no more than 5 minutes with the opening of the edema of the additional power supply unit.
If problems arise with the ignition, it is better to immediately inspect the relay and fuse box; with prolonged exposure to high currents, you may encounter the problem of “socket melting,” which may require more complex repairs.
Replacing the fuel pump and fuel pump mesh for Lada Priora
Replacing the mesh in the fuel pump of Lada Priora
How to disassemble the fuel pump on a Ford Focus 2.
Today I decided to change the strainer on the fuel pump. First, I removed the back seat and unscrewed two bolts on the cover that leads to the fuel pump.
We disconnect the wires going to the fuel pump and get behind the wheel. We start the car and let it idle until it stalls, thereby releasing the pressure inside the pipelines. Be sure to bleed.
Disconnect the wiring harness.
We disconnect the two pipelines that are attached to the fuel pump. Removed by pressing on the iron bracket and, pushing away from you, disconnect the pipeline from the fuel pump
Disconnect two pipelines
Unscrew the eight nuts by 10.
Next, remove the fuel pump holder ring and put it away so that it does not interfere with us.
Then, carefully removing the pipeline hoses, holding them with your hand, we pull the fuel pump itself out of its seat, most importantly, without excessive effort, and carefully so as not to damage the float on the fuel pump.
After removing the fuel pump, disconnect the plastic pipe. Without removing it we will not be able to disassemble the fuel pump
Remove the two small retaining rings on either side of these guides.
Then we disconnect the plastic fasteners (there are three of them) by detaching them, we can get to the mesh itself.
We got to the mesh, as we can see, there are some shavings on it, which means the filter is working well. Next we will remove it to exchange it for a new one.
Using a screwdriver, pry up the mesh and remove it from the fuel pump seat.
Side view of the mesh here you need to insert a screwdriver
So we removed the strainer from the fuel pump to replace the old one with a new one.
Removed mesh from fuel pump
Installing a new mesh on the fuel pump and reassembling in reverse order.
Replacing the fuel pump on a Priora
Repair of priors and revision of the fuel system.
After the fuel level sensor (FLS) failed, I went for diagnostics, where it turned out that my fuel pump on the Priora did not hold pressure. The needle twitched and the mechanic said that the fuel pump would break very soon. So, in connection with replacing the sensor, you need to replace the Priora fuel pump motor, fuel filter and coarse filter.
All this is discussed in this article.
Bosch fuel pump motor for Lada Priora
Fuel level sensor DUT K2
Fuel filter SCT (article ST 342) Priora coarse filter 16V
We begin to disassemble and remove the Priora fuel pump.
— First of all, we reduce the pressure in the fuel system. We lift the rear sofa, unscrew the fuel pump cover and pull out the plug that goes to the fuel pump. After this, we start the car until it stalls on its own.
— Remove the terminals from the battery. This must be done before any repair of the priors
(optional) Vacuum to prevent dirt from falling into the fuel tank
— Remove the hoses (direct and return) going to the fuel pump
Using a regular 10mm wrench, unscrew the nuts and remove the iron and plastic rim
— pull out the fuel pump sideways, being careful not to catch the FLS
We disassemble the pulled out fuel pump of the Lada Priora
-remove the retaining ring from one of the guides.
-Disconnect all the wires, pull out the plug from the housing, the plug from the fuel pump motor and disconnect the wire
-Unbend the 3 latches and take it out along the plastic guides
-Remove the mesh from the motor
Pull back the latch and take out the motor
This photo is so that you can put everything back in place. Here you can clearly see the location of the motor and corrugated hoses
There is dirt on the mesh at the bottom of the fuel pump.
The Priora comes with FLS 11 from the factory. But according to reviews, FLS K2 is better.
Fuel level sensors are completely identical and interchangeable.
On the left is an old fuel pump. on the right is a new Bosch fuel pump for a Priora
This is what the Priora fuel pump looks like when disassembled:
We carry out assembly in reverse order.
We insert the motor into the stand along the guides, put on the mesh from below, simply pressing it against the motor.
We connect the new FLS and do not forget to plug in all three plugs.
This is what the new assembled Priora fuel pump looks like
After that, we put everything in place and screw it on. Don't forget to screw the negative terminal under one of the nuts. Connect the power plug.
Replacing the fuel filter Lada Priora
Next, I replaced the fuel filter, which is located under the car.
We disconnect two hoses from it. Prepare a container for gasoline, because it will flow out of the filter and hoses. We take out the old filter and install a new one.
After all this, we turn on the ignition a couple of times without starting the car. listen to the fuel pump pumping gasoline and check that the filter is not leaking
see also
Comments 29
The nuts are not 10, but 6. M6. Turnkey for 10
Hello! In the 3rd photo is the mass of the fuel pump? If yes, what plug does it come from?
Thank you very much, I will follow your instructions! Good luck on the roads
The author hammer! I’m currently doing this (for the first time) and following your lesson. No nail, no rod for you, and a free 95th. Ufa
Thanks for the article and photos! Very useful!
Clear and to the point) the procedure itself is simple, but for those who want to read it for the first time)
Today tomorrow I will do just this procedure
Is there a difference in the brand of the mesh? Can I take a mesh from a certain company?
Useful work for the car. I have a regular cheap one
Listen, not entirely on topic, I once removed the fuel pump, but the mesh was fine, I put it back, I called your attention, in the third photo you point your finger at the nut, and under it there is a wire, please tell me what it is for and what it connects to, I had it screwed on to the sealing ring, I pulled it, and the other eye of this wire was in free flight, I can’t imagine what this wire is for, if it is not screwed anywhere, I washed it off then screwing it to the retaining ring
Removing and disassembling the fuel pump
Fuel gas pump-3302, 2217 dv.ZMZ-405 electric, assembled with bracket soate
The fuel supply mechanism in the Priora is located in the gas tank, so to get it you need to:
- Remove the rear passenger seat. The latches holding it in place are on the sides.
- There is a hatch in the bottom of the car, secured with two self-tapping screws. Having removed it, we gain access to the fuel pump, which is fixed in the fuel tank with a flat metal ring.
- Remove the ring, which is held in place by nuts screwed onto eight threaded pins spaced evenly around the hole in the gas tank.
- We remove the two fuel hoses and remove the retaining ring.
- We disconnect the electrical connector through which power is supplied to the pump located in the plastic casing.
- We take out the housing; this must be done carefully so as not to damage the float, thanks to which the filling level of the gasoline tank is shown on the instrument panel.
- The next step is to pull out the pump itself, bend the four latches located on the body, and take out the fuel pump, at the bottom of which there is a coarse mesh.
As a rule, the entire mesh looks quite dirty, and its central part is literally clogged with various debris. To remove the old mesh, you just need to grab it on all sides with your fingers and pull it towards you, or pry it with a flat-head screwdriver.
It comes out of its seat relatively easily. After this we install a new mesh. A mesh for the Lada Priora fuel pump can be bought in a specialized store or on the market. It costs about 50 rubles.
There is usually also a lot of debris at the bottom of the plastic cup in which the pump was located. It needs to be rinsed well and wiped with a dry cloth.
Then everything is put together in reverse order. After replacing the mesh, the engine picks up speed smoothly and runs stably. While driving on the highway, the car no longer jerks and accelerates normally.
Replacing the fuel pump mesh Priora/Granta
Fuel pump in VAZ 2110/2112: self-diagnosis and replacement
Procedure:
- Disconnect the drain tube from the intake chamber by prying it off with a screwdriver. To avoid difficulties with reassembly, you should mark the guide on which the spring is placed with a marker.
- Press out the 4 latches of the fuel module cover.
- Remove the cover together with the fuel pump from the housing.
- Remove the fuel pump strainer by prying it off with a screwdriver.
You can clean the fuel pump screen from dirt using gasoline. We wash it in solvent for nitro paint and blow it with compressed air (from a compressor or foot pump). Or replace the fuel pump filter with a new one.
Reassembling the fuel pump is done in the reverse order. When installing the spring, we use the mark that was placed on the guide earlier. You cannot move the spring to another guide.
By the way, do not forget to change other filters.
Basic fuel pump malfunctions.
The fuel pump in the Prior may operate intermittently due to low-quality fuel. This is due to the fact that a fine fuel filter is installed here after the fuel pump.
1. The engine starts poorly or stalls during operation, the mesh may be clogged.
2. The car jerks along the way and slowly picks up speed.
3. In addition, even a well-warmed-up engine, after stopping for a short time, can then start only after prolonged operation of the starter.
There may also be foreign bodies in the fuel system, in which case the fuel pump must be disassembled and thoroughly washed. To do this, use the following tool: flat screwdriver; pliers; set of open-end wrenches; Phillips screwdriver; set of heads.
You can do this type of repair yourself in your own garage. Before starting it, you should once again make sure that the fuel pump is not working as it should.
To do this, you need to start the car and pay attention to the idle speed. If it floats, then this is already one of the arguments in favor of carrying out repair work
In addition, you can go out onto the highway and sharply press the gas at about 3000 rpm. If the car starts to twitch while accelerating, then there is a second argument for making repairs.
Operating principle of RTD
The valve design and operating principle depend on the type of fuel system of a particular vehicle. There are 3 ways to supply gasoline from the tank to the injectors:
- The pump together with the regulator is installed inside the tank; fuel is supplied to the engine through one line.
- Gasoline is supplied through one tube and returned through another. The fuel system check valve is located on the distribution rail.
- The circuit without a mechanical regulator provides for electronic control of the fuel pump directly. The system contains a special sensor that registers pressure; the pump performance is regulated by the controller.
Standard fuel pump for Priora - article number and price
The components catalog for Priora calls the entire system “Fuel Supply System”. It consists of several parts:
- Front tube for flammable substances 1119-01104013-00 - about 250 rubles.
- Front hose 2110-11104218-00 – 600 rubles.
- Fuel filter tube 2110-1110422205 – 800 rub.
- Gasoline pipe 2110-11104056-00, price - 400 rubles.
Pipelines: they are connected directly to a flat container - the gas tank - and then extend from it towards the engine.
Vapor recovery system
- Canister purge valve 2170-01164042-00, price - 1,200 rubles.
- Hose 90 cm long 2110-31164109-10 – 450 rubles.
- Steam pipe 2170-01164084-00 – 120 rubles.
- Middle steam pipe 2170-0116424800 – 600 rubles.
- Front steam pipe 2170-01164244-02 – 200 rubles.
- Adsorber tube 2170-01164282-02 – 350 rub.
- Adsorber 2170-01164010-01 – 750 rub.
- Separator 2170-01164005-02 – 1700 rub.
Ramps and injectors
- Ramp assembly 118-01144010-00, price – 10,000 rubles.
- O-ring 2112-01104252-00, price – 400 rubles.
- Nozzle (one) 1118-01132010-00, price – 1500 rubles.
Finally, the most important thing is the fuel pump system unit for Priora (16 valves), manufactured by Bosch: 2110-11139009-00, price - from 2,000 rubles, its service life is up to 200,000 km. Fuel pump filter for a Priora car - 1118-11392-00, price - 50 rubles.
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:
- Fenox EFM33006O7 - the cost of such a part will be about 3,000 rubles.
- Bosch 0 560 454 035 - as they say, I took BOSCH, and ... (go ahead).
- Ween 192-0262 – the price on the spare parts market will be approximately 3,000 rubles.
- Pekar 2112-1139009 - will cost a little more than the previous two, the average price is 3,500 rubles.
- ATS 53453 - praised, but the price tag is good. We know they put one like this as a replacement for expensive originals on Peugeot.
ATS fuel pump.
Price
Below are the prices and part numbers for the fuel pump, depending on the manufacturer.
| Manufacturer | vendor code | Price, (rubles) |
| Bosch | 2112-1139009 | 2000 |
| SOATE | 60.1139-01 | 1100 |
| RES | 0588455055 | 900 |
The table below shows the elements of the fuel cup and their prices, taking into account the manufacturer.
| Detail | vendor code | Price, (rubles) |
| RTD | 11180-1160010-00 | 480 |
| Hose | 21083-113902200 | 30 |
| Mesh | 21101-113920000 | 30 |
| The cost of a complete fuel pump glass starts from 2,400 rubles. Article: 21101-1139009 |
Useful information and nuances of installing filters
It’s interesting, but original filters for Ford Focus are practically never found on sale. Thus, the manufacturer forces you to change the entire pump assembly. The Ford Focus car uses two types of filters: FGO (for coarse cleaning), which is a mesh, and FTO in the form of a flask.
The purpose of the filters does not need to be described in detail. Let's just say that they efficiently clean fuel in two stages. This practice has long been found in the automotive industry: one filter removes all large particles of debris (mesh), the other qualitatively cleans the fuel before it is directly supplied to the engine.
The coarse mesh on the Ford Focus is located inside the pump
Fuel filters on a Ford Focus can have different designs and be located in different places, depending on the modification and system of the car. For example, on injection internal combustion engines, the FTO remote filter is located near the tank, and the FGO mesh is located inside the fuel pump.
Signs of a car fuel pump malfunction
On a Ford Focus, the FGO mesh is considered a disposable, non-removable element, and according to factory instructions, it can only be replaced when assembled with a pump. The replacement schedule for FTO (external) is every 60,000 km, for FGO (submersible) – every 120,000 km.
Replacing the remote filter is quite easy. You need to crawl under the car, which you have previously placed on a lift or pit. Before doing this, you should put on protective gloves and open the sash or window in the garage to allow benzene vapors to escape. To ensure fire safety, it is recommended to turn off all heating devices.
Next you need to act in the following sequence:
- Pour some fuel into the tank, start the engine and wait until it turns off (the system runs out of fuel - the pressure is released).
- The filter is attached to the body with a bolt, and you need to unscrew it.
- Disconnect the fuel hoses going to the filter (prepare an empty container in advance into which the fuel remaining in the pipes will be poured).
- The filter can then be removed by disconnecting it from the clamp.
- Tighten the new FTO into the clamp.
It is extremely important not to forget to mark the tubes, hoses and fittings that we remove
The Ford Focus remote filter is located separately from the pump
When installing a new filter, you should pay attention to the arrow marked on the housing. It indicates which side of the filter element should face the engine (i.e.
The filter must be placed so that it is directed with the arrow towards the car engine)
e. the filter must be placed so that it is directed with the arrow towards the car engine).
The arrow on the filter should point towards the engine during installation.
Replacement of the mesh is carried out together with replacement of the pump. However, there are motorists who know how to clean the mesh without changing it. There is another option: install a mesh from another car model at the inlet of the original fuel pump, thereby creating additional filtration. This is something like an upgrade designed to improve the stability of the engine for some time. In fact, only a full replacement of the element will make it possible to improve the dynamic and technical performance of the engine if the submersible filter no longer copes with its duties.
Almost all Ford Focus have a hole cut on top of the fuel tank, which is provided for removing the pump and filter without dismantling the entire tank.
The replacement algorithm looks like this:
- The rear sofa reclines.
- The wires going to the pump determine its location.
Wires to the fuel pump will help determine its location - If the hatch is not provided by the manufacturer, then you should use metal scissors to cut and bend the iron just enough so that it is enough to remove the pump.
A hatch cut out with scissors will provide easy access to the pump. - The pump is held on by a nut that must be unscrewed.
After the pump is dismantled, you need to remove the bottom plastic cover protecting the mesh.
The submersible filter is located inside the pump, it is hidden by the bottom plastic cover
All that remains is to remove the submersible filter and replace it. If the pump is being replaced, then you need to install a new unit in place of the old one. After assembly, be sure to pump some fuel into the system with the starter, but do not start the engine. Then you should check the connection for leaks. The car must also be tested in motion. If there are no leaks anywhere, all hoses and tubes are properly secured, then you need to drive the car at speed along the highway, then downhill. This is how the fuel supply is checked in different driving modes.
How to replace faulty devices
The power system filters are replaced by first disconnecting the battery. The replacement sequence for car modifications with different engines is the same. It is more convenient to remove a fuel module with a coarse filter when there is little fuel in the tank.
To work you will need:
- screwdriver;
- socket wrench 10;
- 0.5–1 liter container for draining gasoline from the filter.
Before removing the fuel filter or opening the gas tank, relieve the fuel pressure.
Fuel pressure relief algorithm
Proceed according to the sequence below:
- Turn off the ignition.
- Remove the right floor channel lining panel.
- Remove the fuel pump fuse.
- Start the engine and wait until it stops after running out of fuel.
- Turn on the starter for a few seconds.
- Turn off the ignition.
- Replace the fuse.
Photo gallery: relieving fuel pressure on the Lada Priora
Replacing the device: photo and procedure
To replace a faulty part in a garage, follow the recommendations below:
- Place the machine on the inspection hole.
- Relieve pressure in the fuel system.
- Disconnect the battery.
- Squeeze the clamps of the supply (left) hose and disconnect it.
Squeeze the clamps of the inlet (left) hose, then disconnect it
Disconnect the outlet (right) hose from the fuel filter
Loosen the clamp bolt
Holding the holes in the fittings with your fingers, remove the filter from the clamp
Please note that there is no difference in the procedure for replacing filters on an eight- and sixteen-valve engine.
After the launch of the new model, cars of the Priora and Lada 110 families were produced in parallel for some time, but Priora quickly supplanted its predecessor model: in March 2007, the Priora sedan, VAZ-2170, was launched, in February 2008 - the VAZ-2172 hatchback, and in May 2009 - VAZ-2171 station wagon. Later, small-scale modifications were also produced - the extended Priora Premier, the three-door Priora Coupe and the sporty Priora TMS.
Innokenty Kishkurno
How to install the electric fuel pump strainer correctly
To dismantle the part yourself, proceed as follows:
- Relieve pressure in the fuel system.
- Disconnect the battery.
- Unscrew the fastenings of the hatch under the rear seat, open access to the fuel unit.
Unscrew the fastenings of the hatch under the rear seat, open access to the fuel unit
Clean the fuel assembly cover from dust and dirt
Carefully disconnect the power connector
Press out the spring clips that hold the fuel hoses in place, then disconnect them
During the dismantling process, be sure to check the technical condition of the parts.
Remove the fuel assembly by holding it with both hands
If everything is done correctly, the fuel pump assembly will be in your hands
Fuel pump fuse and its functions
The functionality of the gasoline supply system in the Priora hatchback is ensured by the fuel pump fuse. This component is responsible for the fuel injection function through the injection feed. The pump operates under a voltage of 12 V and with its help fuel is supplied. If the fuse breaks, the Priora car will not be able to start.
What is the function of a fuel pump?
This component is responsible for suctioning fuel and supplying gasoline to the intake injection manifold. In the event of a breakdown, gasoline is not supplied and it becomes impossible to start the engine. When problems arise with the engine, Priora car owners should first check the pump fuse.
The operation of the fuel pump is fully controlled by an electronic control system. The signal is transmitted to the fuel pump upon ignition, after which it begins to move. Thus, a pressure of a certain power is created to regularly deliver gasoline to the engine.
Operating principle of the fuel pump fuse
The fuse operates using a simple design, which includes two aluminum contacts and a fire-resistant plastic cover. High voltage disables it and its shell melts. This is the best signal to replace the fuse.
The normalized current between two contacts is carried by a contact thread located between them. The marking should be taken into account, for example, when designated as “15A”, the constant current voltage cannot exceed this value. If more voltage passes through, the thread will break and the body will melt.
Replacing the fuel pump mesh on a Priora
The fuel pump in a car is designed to supply gasoline from the fuel tank to the engine. For carburetor cars, mechanical pumps are used.
Due to the short distance between the carburetor and the fuel pump, fuel is supplied at low pressure. Cars with an injection-type fuel system are equipped with electric fuel pumps that supply gasoline under high pressure.
The operation of such a pump is controlled by an electronic system that takes into account the throttle position, as well as the air-fuel ratio.
Basic fuel pump malfunctions
The fuel pump in the Prior may operate intermittently due to low-quality fuel. This is due to the fact that a fine fuel filter is installed here after the fuel pump.
At the inlet there is only a filter mesh that performs rough cleaning. The gasoline at some of our gas stations is so dirty that the mesh gets clogged quite quickly. The engine does not start well or stalls during operation.
The car jerks along the way and slowly picks up speed. If the filter mesh is partially clogged with debris, the optimal supply of gasoline to the engine is disrupted in different operating modes. When the pump is unable to maintain the required pressure in the fuel system of 3.7-4.0 atmospheres, improper mixing of air and fuel occurs. As a result, the car loses speed.
Unstable operation of the power unit is most often a consequence of a faulty fuel pump. First of all, you need to check the pressure level in it.
If after stopping the engine the pressure in the pump drops too quickly, then there is obviously damage to the diaphragm, as well as the sealing gasket. In this case, the gasket should be replaced, and the diaphragm should be reinforced with a special film.
There may also be foreign bodies in the fuel system, in which case the fuel pump must be disassembled and thoroughly washed. To do this, use the following tool:
- flat screwdriver;
- pliers;
- set of open-end wrenches;
- Phillips screwdriver;
- set of heads.
You can do this type of repair yourself in your own garage. Before starting it, you should once again make sure that the fuel pump is not working as it should.
To do this, you need to start the car and pay attention to the idle speed.
If it floats, then this is already one of the arguments in favor of carrying out repair work. In addition, you can go out onto the highway and sharply press the gas at about 3000 rpm. If the car starts to twitch while accelerating, then there is a second argument for making repairs.
Removing and disassembling the fuel pump
The fuel supply mechanism in the Priora is located in the gas tank, so to get it you need to:
Remove the rear passenger seat. The latches holding it in place are on the sides. There is a hatch in the bottom of the car, secured with two self-tapping screws. Having removed it, we gain access to the fuel pump, which is fixed in the fuel tank with a flat metal ring. Remove the ring, which is held in place by nuts screwed onto eight threaded pins spaced evenly around the hole in the gas tank. We remove the two fuel hoses and remove the retaining ring. We disconnect the electrical connector through which power is supplied to the pump located in the plastic casing. We take out the housing; this must be done carefully so as not to damage the float, thanks to which the filling level of the gasoline tank is shown on the instrument panel. The next step is to pull out the pump itself, bend the four latches located on the body, and take out the fuel pump, at the bottom of which there is a coarse mesh.
As a rule, the entire mesh looks quite dirty, and its central part is literally clogged with various debris. To remove the old mesh, you just need to grab it on all sides with your fingers and pull it towards you, or pry it with a flat-head screwdriver.
It comes out of its seat relatively easily. After this we install a new mesh. A mesh for the Lada Priora fuel pump can be bought in a specialized store or on the market. It costs about 50 rubles.
There is usually also a lot of debris at the bottom of the plastic cup in which the pump was located. It needs to be rinsed well and wiped with a dry cloth.
Main causes of malfunction
The fuel pump can stop functioning only for two main reasons - lack of fuel in the beam or the occurrence of malfunctions. In the second case, the causes of breakdowns are usually as follows:
- Using poor fuel that does not meet quality standards.
- Valve failure. Most often, they simply become clogged, in which case it will be enough to dismantle the lid and mesh of the device and then clean them. If the valves are loose and their position is unreliable, the pump will need to be completely replaced.
- A blockage in the filtration system through which the fuel passes, causing excessive pressure to be applied to the pump, preventing it from functioning properly.
- Lack of timely refueling and driving a car with a minimum amount of fuel in the tank. This causes the device to idle, which quickly leads to its malfunction.
- Relay or fuse failure.
The VAZ 2110 is equipped with an injection pump - this is a reliable device that rarely fails.
In most cases, all breakdowns occur due to the driver’s fault; If you suspect a malfunction, you can check the fuel pump in the following way:
- Using a screwdriver or a special wrench, loosen the clamp of the incoming hose through which the fuel is supplied, after which it can be removed from the studs.
- Install a plug using a bolt with a diameter of 8 mm; it will prevent fuel from leaking out.
- Make several movements using the hand drive lever. At this moment, it is necessary to monitor the outlet fitting - a strong stream of fuel should shoot out of it, which will indicate that the device is in good condition. If this does not happen, you will need to move to the next step to continue the diagnostic process.
- It is necessary to loosen the clamp of the outlet hose and install a plug in the same way as was done before.
- A damper is placed on the inlet fitting; you can simply hold it with your finger, and then operate the manual drive lever again. The absence of a feeling of vacuum and suction of the finger inside will indicate that a breakdown has been detected: the fuel pump should be replaced or repaired.
- If no faults are detected at the previous stages, it is necessary to check the fuel line; most likely, it will be the cause of the breakdown.
Unlike older models, the VAZ 2110 was equipped with an electric fuel pump, so its transition to operating mode and the start of operation is indicated by a characteristic buzzing sound that occurs after turning the winding key.
Its absence may indicate a failure of the relay and fuse, so these parts of the device should be checked first. It's quite easy to do this:
- You need to find a bracket with fasteners for these elements; it is located under the front panel near the glove box. It should have 3 relays and 3 fuses installed.
- Initially, the outermost fuse on the left side is inspected ; there should be no signs of burnout on it.
- Next, the relay located in the middle is checked - you will need to check the voltage readings between the body negative after turning on the ignition and the pink wire.
- If there is a voltage of 12V, you need to short the pink wire to the gray wire, which will allow you to connect contacts 30 and 87 of the relay. The start of operation of the fuel pump will indicate a failure of the relay. This can be checked by temporarily installing a working relay removed from another vehicle.
Below are instructions for replacing the fuel filter on a Lada Priora car without threaded connections.
Preparatory stage
The most convenient way to change the fuel filter is in an inspection hole or overpass. Remember: the fuel in the vehicle's power system is under pressure. Decompression is performed before replacement. There are three ways to relieve pressure in the fuel system.
Method No. 1. After stopping the engine, wait 4 hours. After this period of time, the pressure itself decreases.
Method No. 2: Find the fuel pump circuit in the fuse box. Remove the pump fuse and start the car. After 2–4 minutes, the engine will stall on its own because the gas in the system will run out: the gas pump is turned off and does not supply a new portion of fuel. Turn off the ignition and start replacing the fine filter.
Method number 3. Disconnect the circuit breaker on the fuel pump. To do this, remove the lower part of the rear sofa, unscrew the protective hatch and disconnect the pump power connector. Start the engine and wait 2-4 minutes until the engine stalls. Turn the ignition key to the “Off” position. Replace the filter.
Replacement process
- Use a metal brush and WD-40 to clean the filter mounting area and the fuel hose connection.
Before replacing, clean the fuel filter mount and fuel hose connections.
Check the condition of the rubber seals before installing the fuel hoses. It is advisable to replace them with new ones.
