- Operation of the VAZ 2110 fuel pump, its malfunctions
- Replacing the pump and its filter
- Required Tools
- The process of replacing the fuel pump VAZ 2110
- How to measure the pressure in the fuel system?
Most of the units and components in cars of the Lada Samara model line can be changed with your own hands. To do this, just stock up on the necessary tools and purchase a new part. This material describes in detail how to replace a VAZ 2110 fuel pump and its filter element - a mesh. The work is quite simple, since installing a new product does not require an inspection hole or a lift. After studying this material, the reader will learn how to change the fuel pump, when it needs to be done and how to determine that the unit has failed. To make sure that the device has failed, you need to measure its pressure - the article contains several ways to perform this action.
Advice! Many Samara owners install a VAZ 2110 Bosch fuel pump. Despite the higher cost, the imported unit has a long service life, and it is easier to maintain when compared with a standard unit.
Operation of the VAZ 2110 fuel pump, its malfunctions
From the name you can understand that the fuel pump supplies fuel from the tank to the engine injectors. Accordingly, if the unit is faulty, then there will be no gasoline injection, and the power unit will not start working. There are options for injector and carburetor. The VAZ 2110 is equipped with an injector; therefore, the fuel pump must be suitable for this system. If the “ten” was modernized by installing a carburetor, then the unit will have to be taken out of stock. The unit is located in the fuel tank - under the left rear door, the electrics go under the rear row seats.
It is quite simple to understand that there are faults in the pump or its network:
- The car won't start. There are many reasons for this malfunction, but before performing a full diagnosis, you need to check whether the pump mesh is clogged or clogged.
- There are noticeable jerks in first gear. There are also many options here, but one of them is a non-working fuel pump.
When to replace
Such minor repairs are carried out as the grid becomes dirty, which happens quite quickly, given the quality of domestic fuel. The correct approach is to change all consumables at the same time, guided by the frequency of pouring new oil into the engine.
During this procedure, you can replace the air and oil filters, as well as the fuel pump mesh. If you make it a habit to change this mesh only after it is completely clogged, the pump will constantly work with increased load, as a result of which repair or even replacement of the VAZ 2110 fuel pump will quickly be required.
The first sign of a faulty fuel pump is the engine refuses to start. After turning on the ignition, you can hear a slight buzzing sound of the operating gasoline supply device, which stops after it creates the necessary fuel pressure in the system.
If after this the car engine does not start or even the sound of the VAZ 2110 pump cannot be heard, then you need to check the presence of gasoline pressure in the line. This is done using the bleed valve on the ramp. The verification procedure will be discussed below. If there is no fuel, it becomes clear that the fuel pump is not working or its screen is clogged.
How to measure the pressure in the fuel system?
Screw on the meter hose
The easiest way to measure pressure is with a special device - a pressure gauge. The kit also includes an adapter and drain. Pressure can be determined using an air pressure gauge. This device is present in almost every motorist, as it is used to measure tire pressure. A normally functioning pump in a VAZ 2110 should have a reading of 2.8-3.2 atm. You need to connect the pressure gauge and check what the indicator is with the engine not running, but with the fuel pump on. It must be no lower than 2.8 atm.
Description of the work
The location of the VAZ 2110 injector fuel pump is in the gas tank located under the bottom of the car, in the area of the rear seat. It is accessible from the cabin, so no inspection holes or other additional devices are required. Only tools needed:
- open-end wrench 13 and 17 mm;
- Phillips screwdriver;
- 7 mm tubular socket wrench.
Instead of a long 7 mm tubular wrench, you can use a small open-end wrench, but this will be inconvenient and take more time. Before starting repairs, you should completely remove and pull out the rear seat to gain access to the gas tank. Two more preliminary operations that are done in the engine compartment.
- Loosen the nut securing it to the negative terminal of the battery, remove the clamp along with the wire.
- Relieve pressure from the fuel line. At the end of the ramp, near the outer nozzles, there is a bleed valve with a rubber cap on it. Having removed it and substituted a plastic cup, you need to press the valve stem. Fuel will leak out from there and the pressure in the system will drop.
Fuel coarse mesh in the fuel pump - why is it needed?
The initial cleaning of the fuel is ensured by a mesh mounted on the fuel pump body, and when the car begins to move jerkily and the fuel supply is difficult, first of all you should check the condition of this mesh, because it can be contaminated to such an extent that its initially snow-white color is very difficult to recognize.
Note! The main reason for grid contamination is poor fuel quality!
When to change the screen in the fuel pump?
In order to understand when it is necessary to replace a particular component in the fuel system, and specifically the grid, you need to know about the presence of pressure in the fuel rail. You can learn how to take measurements correctly from this article.
You can also find out about its insignificant condition by the following signs:
- a very prolonged and loud hum occurs . since gasoline is difficult to absorb into the system through a clogged mesh. This can significantly reduce the working life of the fuel pump itself and the contamination of the entire fuel system as a whole.
- While driving, when switching to third or fourth gear and then pressing the gas pedal, there is no increase in power .
- Also, a clogged mesh can cause a loss of speed while the car is moving . since the required amount of fuel simply does not enter the combustion chambers.
Some tips for replacing the fuel filter:
- Refuel at proven, or even better, branded gas stations.
- Try not to pour fuel into the tank immediately after the fuel has been drained from the tanker at a gas station, because the fuel in the tank is agitated and dirt is more likely to get in.
- Do not pour fuel into old, rusty cans.
- Change fuel filters on time - then a malfunction will not catch you on a long journey.
- Wash the fuel intake strainer at the pump inlet: this will extend its service life.
Sources
- https://KrutiMotor.ru/kak-pomenyat-setku-benzonasosa/
- https://enginehack.ru/zamena-setochki-benzonasosa/
- https://forse.su/kak-pomeniat-filtr-na-benzonasose.html
- https://lanosovod.ru/kak-zamenit-setku-na-benzonasose-shevrole-i-deu-lanos-sens-i-shans.html
- https://OdnaDetal.ru/drugoe/simptomy-zabitoj-setki-benzonasosa-2.html
- https://carfrance.ru/kak-zamenit-setku-v-benzonasose-vaz-2112/
- https://expertVAZ.ru/2110/zamena-setki-benzonasosa.html
- https://www.zr.ru/content/articles/909842-toplivnyj-filtr-menyat-ili-i/
Cleaning or replacement?
The filter, which is located in the fuel pump, must be replaced if there is contamination on it, since its price is not high. However, if you find yourself in a situation where it is simply not possible to buy a new element, then you can wash it.
Remember that the effect of cleaning the fuel pump mesh will only be temporary, and replacement should be carried out as soon as possible.
Author: Sochi Auto Repair
Replacing the fuel pump filter on a VAZ-2110 - On VAZ-2110 cars with an injection system, in addition to the fine fuel filter, there is also a filter mesh located in the gas tank on the fuel pump. The mesh is designed for rough cleaning of fuel. You've already bought the mesh, that's not a problem, now let's change it!
Replacing the fuel pump filter on a VAZ-2110
Replacing the fuel pump filter on a VAZ-2110
Replacing the filter mesh on the fuel pump takes about 30 minutes. Let's start with the battery! To do this, you need to remove the negative terminal from the battery. Next you need to remove the rear passenger seat. And now we remove the fuel pump cover by unscrewing just two screws, then carefully disconnect the pump power supply.
Using a 17 wrench, unscrew the fuel hose fittings.
Then use a 7mm socket wrench to unscrew the fuel pump mounting nuts and carefully remove the pump so as not to damage the fuel level sensor float, while the pump cup may remain in the gas tank; it must be removed from the tank.
We remove the mesh from the pump and install a new one, put the pump in the glass and install it in place. We collect everything else in the same sequence.
Many people manage to clean the mesh with toothbrushes, but if it is not changed for a long time, the mesh becomes deformed and breaks due to the corrosive effects of gasoline. It is advisable to change the mesh, especially since the cost of a new mesh is about 60 rubles, which is not expensive.
When replacing the mesh at a service station, car service center or specialized workshop, additional work must be carried out on the pump itself, for example, fine adjustment of the fuel level float. Adjustments are made on a stand, which you don’t have in your garage!
What is a fuel pump and how does it work?
Gasoline filter VAZ 2110
The VAZ fuel pump is an integral part of every car that has an internal combustion engine, so it must be kept in good condition. Usually the fuel pump breaks down in two cases: when the strainer is clogged (we will tell you how to replace it below) and when the car owner drives on an empty tank. In the first and second cases, the fuel pump operates at full capacity and wears out very much.
Note. Car owners are advised to develop the habit of driving on a half-empty tank, in which case the gas pump will last longer.
Gasoline filter for VAZ 2110
In older cars, the fuel pump is not used at all, so the problem of its breakdown does not arise, but, of course, other problems arise. In modern cars, the gas tank and engine are located on different parts of the car, and the gas pump pumps fuel from one part to the other. Types of fuel pumps in modern cars:
There are two types of engines: carburetor and injection engines, both types of these engines use different fuel pumps. A carburetor uses a mechanical fuel pump, and the fuel is usually delivered under slight pressure.
An injection engine, on the contrary, supplies fuel quickly and under high pressure and uses an electric type of gasoline pump (see Electric gasoline pump VAZ 2110 and all about it). The VAZ 2110 uses both carburetor and injection engines, it depends on the vehicle’s configuration.
Fuel pump filter VAZ 2110
These fuel pumps are mounted in different ways; the mechanical type of fuel pump is mounted on the fuel tank, and the electric fuel pump is located directly in the fuel tank. Also, there are VAZ 2110 configurations with two fuel pumps, the first is attached to the gas tank and operates at low volumes, and the second is located directly in the engine and operates at very large volumes. Electric fuel pumps work on the following principle: they push fuel into the engine and the speed at which the fuel is pushed depends on which engine is installed in the car. If the engine is powerful, then the fuel pushing speed will be high, but if the engine is weak enough, then the pushing speed will be lower.
Note. The speed at which electric fuel pumps push fuel is controlled by an electronic system installed on the vehicle.
Gasoline filter for VAZ 2110
On older cars, there is no electric fuel pump, and the fuel supply speed is not regulated in any way. Older fuel pumps deliver fuel to the engine at a constant rate, which prevents it from stalling. Electric fuel pumps are very, very noisy, which is why they are installed directly in the fuel tank. They heat up very quickly, but the fuel in the fuel tank cools the fuel pump and muffles unnecessary noise.
How does the fuel pump start?
Gasoline filter for VAZ 2110
The fuel pump is started using a special electric motor. When you start your car by turning the ignition key, the car's computer sends a special signal to the fuel pump to start it. An electric charge is supplied to the fuel pump and the electric motor located inside the fuel pump begins to work, thereby creating pressure in the entire fuel system. Then the fuel reaches the engine and the engine starts. All this usually happens within two seconds, but if the engine does not start and the car’s on-board computer does not receive any signal from the engine, the fuel pump turns off.
Note. And this happens solely for safety reasons, because a constant flow of fuel directed into an idle engine can lead to breakdowns or even fire.
The sound of the fuel pump can only be heard in the first two seconds, then it works almost silently. The fuel pump pumps fuel from the fuel tank and directs it to the engine, passing the fuel through a filter.
Signs of a clogged filter
By indirect signs you can determine whether it is dirty, but it is not always possible to reliably find out about its condition without visually assessing the mesh.
Signs of a dirty filter:
- The car accelerates poorly;
- There is no necessary dynamics;
- Unstable idle;
- The engine starts poorly and stalls;
- Increased engine vibrations;
Based on the signs already stated above, you should begin inspecting the fuel system and be sure to start with coarse and fine filters. You can read how to replace the fine filter here.
Also, if the mesh is very dirty, the fuel pump itself may fail. Therefore, it is not recommended to neglect its replacement.
What happens if the fuel filter is clogged?
The filters are, of course, damaged by the dirt that gets into the tanks of our cars along with the fuel. And it’s not the oil refineries that are to blame. Fuel can become contaminated during storage and transfer. And the driver will feel the clogging of the fuel filter by the behavior of the car, and first in those modes where the instantaneous fuel consumption of the engine is maximum. These are driving modes at high speeds and intense acceleration. In this case, the engine will lose traction and operate intermittently, although at idle and in “quiet” modes everything will look decent.
Fuel coarse mesh in the fuel pump - why is it needed?
The initial cleaning of the fuel is ensured by a mesh mounted on the fuel pump body, and when the car begins to move jerkily and the fuel supply is difficult, first of all you should check the condition of this mesh, because it can be contaminated to such an extent that its initially snow-white color is very difficult to recognize.
Note! The main reason for grid contamination is poor fuel quality!
When to change the screen in the fuel pump?
In order to understand when it is necessary to replace a particular component in the fuel system, and specifically the grid, you need to know about the presence of pressure in the fuel rail. You can learn how to take measurements correctly from this article.
You can also find out about its insignificant condition by the following signs:
- When the ignition is turned on, a very prolonged and loud hum , since gasoline is hardly sucked into the system through a clogged mesh. This can significantly reduce the working life of the fuel pump itself and the contamination of the entire fuel system as a whole.
- While driving, when switching to third or fourth gear and then pressing the gas pedal, there is no increase in power .
- Also, a clogged mesh can cause a loss of speed while the car is moving , since the required amount of fuel simply does not enter the combustion chambers.
Step-by-step process for replacing the fuel pump mesh on a VAZ-2112
In order to dismantle the mesh on the fuel pump, it is necessary to remove the fuel pump from the tank, and to do this we do the following:
- We place the car on a flat surface, ensure it is in a stable position and put on the handbrake.
- Disconnect the negative terminal from the battery.
- Removing the back seat. It can be completely dismantled by unscrewing just two bolts, or simply moved to the side.
- Unscrew the bolts that secure the fuel pump hatch.
First, turn off the fuel pump!
Please note - the power is turned off here!
Please note that when dismantling the fuel pipes, there may be a release of pressure in the system, so cover the pipes with an old rag in advance.
- When the lines are removed, remove the rubber gaskets and seals from each of them, and then replace them with new ones.
The rubber seal is indicated by the arrow.
The nuts are marked with a red marker.
If the gasket is damaged, replace it.
We remove the fuel pump on a rag.
Dirty fuel pump screen.
The difference between the old grid and the new one.
If any parts and elements in this system show signs of damage or wear, they must be replaced.
Cleaning the fuel pump mesh
If it happens that you do not have the opportunity to purchase a new mesh, and the old one has become unusable, you can simply clean it and below we will tell you how to do this.
There are several ways to carry out this procedure and here are some of them:
- The mesh is cleaned by soaking it in a solution of detergents or bath cleaners. To do this, mix them with water at a ratio of 1 to 10 and then leave it there for one hour. When the soaking time is over, simply rinse the mesh under running water.
- Using the same solution, rinse an old toothbrush in it and clean the mesh with rotational movements.
- If you have a compressor, then it can also be useful during such work.
Please note that after performing such mechanical work on the mesh, inspect it for damage, since the presence of defects makes it impossible to use it in a gas pump.
