On any passenger car with a gasoline power unit, the fuel pump is designed to supply fuel under pressure from a gas tank into a dosing device - depending on the modification of the engine on the VAZ vehicles, the fuel system is injector or carburetor. About this further in the article.

Car gas station, device and installation location

The gas station on the VAZ 2110-2112 can be electric or mechanical, its view depends on the type of fuel system, which is installed on the engine. The gas station on the carburetor engines of cars VAZ 2110 is behind the valve cover, near the distributor interrupter, and on the machines with an injection motor it is located in the fuel tank.

Mechanical fuel pumps, principle of action pluses and cons

The design of the mechanical benzonasos includes such components:

• Mesh filter.
• Lid.
• Top plate.
• Top of the case.
• Remote spacers.
• Working diaphragms.
• Lower plate.
• Safety diaphragm.
• Return spring.
• Stock.
• Lever for manual swap.
• Lower body.

Such a design forms a chamber having output and intake valves. These valves are located in the upper body of the mechanical fuel pump. The driving lever of the gas station of this type is constantly moving down and up, but the lever shifts the diaphragm down only when the filling of the chamber of the fuel pump is required. Using the recovery spring, the diaphragm shifts back up. So fuel is served in the carburetor.

Electric fuel pumps, principle of operation, pros and cons

The design of the electrical space includes such components:

• Inlet and exhaust valve.
• Camera.
• Return spring.
• Diaphragm.
• Core.
• Solenoid valve.
• Electric contacts.

Electrical displacement works with a special core, drawn into the solenoid valve, until the contacts are turned off to supply the power supply. Rotate the ignition key before starting is the signal to the vehicle onto board. At this stage, electric shocks are already fed to the fuel pump. The power unit is not yet launched, and the electric motor inside the fuel pump in a couple of seconds raises the pressure in the system to the worker. That is why it is recommended to wait two or three seconds before turning the starter and run the power unit.

Rules for a gas station for a car

When choosing a fuel pump, every car owner wants the new element to be perfect for the car, and was also reliable and served not one year. Another important characteristic of the fuel pump is "noise", because the quiet fuel pump will work, the more comfortable the car will operate.

As for the interchangeability of fuel pumps, when opening the catalog of spare parts, you can see many catalog numbers of fuel pumps, which are used on VAZ 2110 with a 1.5 liter motor volume: 2112-1139009-06, 2112-1139009-03, 2112-1139009-02, 2112-1139007 -06, 2112-1139007-01, 2112-1139007, 21102-1139009-06, 21102-1139009-03, 21102-1139009-02. As a rule, the difference in Dut (fuel level sensor), so when choosing a new fuel pump assembly, it is recommended to buy a spare part with a similar article.

Separately, you can select the fuel pump with the following number - 21101-1139009, used on machines with a 1.6 liter motor and having a fuel pressure regulator. When choosing a fuel pump, confusion does not rarely occur in such concepts as the fuel pump itself and the gas station module. In the first case, there is a gas station engine, and in the second we are talking about the entire design assembly, which is removed from the tank.

Rules of operation of gas station

The device is not welcomed. However, for the long-term and proper work of the gas station, several rules must be followed. It is important to take care that a pure fuel composition fall into the pump. It is necessary to apply fuel with the corresponding octane number and without excess substances. The presence of extraneous impurities and unnecessary elements is adversely affecting the functioning of the device.

To prevent from entering the device of different particles, you should take care of the productive functioning of the fuel filter. The correct operation of the fuel pump is significantly affected by the performance of the fuel filter, so it is necessary to clean it in a timely manner or replaced, which will extend the life of the fuel pump. On machines equipped with electrical counterparts, there are features. The bottom line is that the electrical space is cooled due to the passing fuel. Therefore, do not allow the limit fuel consumption, otherwise the instrument and its ambulance failure is possible.

Diagnostics of the health of gas station

To check the performance of mechanical benzonasosos, it is necessary to disconnect the hose between the carburetor and the fuel pump - it must be splashing gasoline that is under low pressure. Then you should send the hose to any empty container and turn the motor starter - if in thirty seconds it swings half liters, it means everything is normal. And if not, it means you need to restore the performance of the system.

As for electric fuel pump, there are several variations of its inspection at home:

1. With the help of a light bulb (power diagnostics).
2. With the help of dimensional capacity.
3. With the help of a pressure gauge (diagnostics for mechanical wear).
4. Verification of wiring using a light bulb (electrical).

What productivity of the fuel pump is considered the norm

The productivity of the fuel pump should be at least 60 liters per hour.

Signs of faulty benzoneasos

• When the ignition is turned on, there is no sound of a gas station.
• Unstable engine operation in various modes of operation, floating turnover and other symptoms, similar to the trim.
• For incomprehensible reasons, fuel consumption increases.
• Noise is heard in the cabin, which comes from the fuel pump. The pump is very buzzing, makes cotton, squeak and crackle.
  
• The car starts, but stalls. At the same time, you are sure that gasoline is in the tank.
• Difficulties in acceleration, the motor is gaining momentum with great difficulty, the reaction to pressing the gas pedal is belated, there are failures, as well as jerks in motion.
• There is a long time to twist the engine starter when starting a cold or pre-warm power unit. This may indicate that the pump cannot immediately create the required pressure in the system.

Tools, fixtures, consumables

1. Set of wrenches.
2. Head on "7".
3. Screwdriver.
4. Pliers.

Choice of workplace, safety

For the repair of the fuel pump, the presence of an overpass or observation pit is not required, so work can be carried out both in the garage and on the street. Do not forget to disconnect the minus terminal of the AKB.

Repair of gas station VAZ 2110-2112, phased work

1. First of all, it is necessary to dismantle the fuel pump. To do this, remove the rear seat cushion.
   
2. Using a screwdriver, unscrew the two screws and remove the hatch cover.
   
3. Disconnect the electrical displacement.
   
4. Using the key to "17", unscrew the fitting on the fuel supply pipe and remove it.
   
5. Similarly, unscrew the decomposition of the drain pipeline and remove the tube to the side.
   
6. Take the head to "7" and unscrew the eight fastening nuts of the clamping ring, then remove it.
   
7. Gently lift the node and remove the fuel pump, withdrawing the float of the tank.
   
8. Using a cross-like screwdriver, unscrew two screws and disconnect the fuel level pointer.
   
9. Now it is necessary to disconnect the electrical plug from the pump. To do this, we take two locks with a screwdriver and remove the fuel pump from the guides.
   
10. Holding nuts using the key to "5", unscrew the two screws of the fuel pump cover.
    
11. Remove the lid and remove the fuel pump.
    
12. If the electric motor of the benzonasos has failed, replace it with a new one.
    
13. If the rubber fuel pump bushing is deformed (breaks, cracks are observed), replace it.
    
14. If the sealing rings have traces of excessive compression, oversight or scuffs, replace them with new ones.
    
15. After carrying out the required repair work, collect all the details in the reverse order.
16. When assembling the fuel pump, lubricate the rubber sleeves, which centen it in the case using WD-40.
    
17. When installing the gas station node, the arrow on the flange should point to the back of the TC.
    
18. Before installing the hatch cover, launch the power unit and check the fuel leakage fuel pump.

Tips Prof.

So that your fuel pump served as long as possible, do not forget to replace the fuel filter and other filtering elements of the fuel system, as well as refuel with high-quality gasoline on proven gas stations.