Everything you need to know about the operation of the fuel pump in a VAZ 2106 car

VAZ 2106 owners know firsthand how many problems this car can cause. At the same time, a particularly large number of troubles are associated with the fuel pump: it either pumps, or does not pump, or becomes clogged with debris, or refuses to work for unknown reasons. Therefore, it is necessary to learn in advance about all the intricacies of the operation of the gasoline pump and be able to eliminate any malfunctions that may arise.

• Operating principle
  Video: design and operation diagram of a gasoline pump

• Signs of a malfunctioning gasoline pump

  What to do if the fuel pump does not pump

• The pump does not pump when hot
• Why does the pump hum but not pump?
• For what reasons can the fuel pump on the “six” fail?

Main causes of overheating

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". Most likely, if there are no characteristic reasons for overheating, the pump has simply outlived its useful life. A banal replacement can completely eliminate the problem. On the other hand, if the cause is not eliminated, the new pump will also heat up like the old one, and the money spent on the purchase can be considered lost

Most likely, if there are no characteristic reasons for overheating, the pump has simply outlived its useful life. Simply replacing it can completely eliminate the problem. On the other hand, if the cause is not eliminated, the new pump will also heat up like the old one, and the money spent on the purchase can be considered lost.

However, this rarely happens. More often than not, problems are actually related to the pump.

Here are the main causes of overheating.

1. Dirt. A device used for a long time will overheat faster. It is necessary to check all pump elements, including the filter mesh. Clean or replace consumables if necessary.
2. External damage, such as a crack or something similar. The cause may also be wear of the device’s gears or rollers protected by hydraulic superchargers.
3. Driving with Chek-Engin. Some motorists ignore the warnings that the car sends. They continue to drive, although the system notifies that there are problems, including those related to the fuel pump.
4. Driving with a red light. It lights up on the instrument panel if the volume of fuel liquid in the tank is critically small. It is especially dangerous to travel with a half-empty tank in hot weather. The fuel pump will soon overheat.
5. Refueling at questionable gas stations. Pumping low-quality fuel also negatively affects the operation of the pump. If the fuel contains a large amount of sulfur, the commutator will gradually become covered with a dark coating, contact with the brushes will deteriorate, and sparking will begin inside the device, which will lead to overheating.
6. The main filter is clogged. This is a separate part installed in the section of the fuel line. It has the ability to retain small particles of debris that get into gasoline.
7. Violations in the voltage circuit, short circuits. This is also a clear reason for overheating of a modern type electric pump. With such problems, the pump begins to turn on in starting mode, and as a result overheats.

Signs of an overheating fuel pump are:

• decreased engine performance;
• its unstable operation in all modes.

However, an accurate diagnosis is always made after a thorough check. If the pump is not placed inside the tank, but is located under the bottom of the car, diagnosing overheating is easier than ever. You need to remove the plastic protection of the device and drive it like this for several days. When the engine suddenly stops or performance decreases, get out of the car and put your hand on the pump. An overly hot case is evidence of overheating.

Why doesn't the fuel pump deliver gasoline?

One of the most important elements of the fuel injection system of a gasoline engine is the electric fuel pump, which is located in the fuel tank of the car. The fuel pump pumps fuel into the system from the gas tank. creating a certain pressure.

Auto repair experts identify the following common fuel system problems that are related to the fuel pump:

• The fuel pump pumps poorly and does not create the required pressure;
• the fuel pump does not pump when the ignition is turned on;

Considering that the fuel pump is an electromechanical device, the most common fuel pump malfunctions are related to both the mechanical and electrical parts. Next, we will look at what signs indicate a breakdown of the fuel pump and why the fuel pump stops pumping partially or completely.

Repair

Repair of a mechanical fuel pump Repair
of a mechanical fuel pump consists of installing a new repair kit (diaphragm and valves) and, if necessary, a worn pusher with a spring. A deeper repair of this device is impractical, since the costs of purchasing and repairing worn parts are close to the cost of a new product. If the pump housing is deformed or damaged, it must be completely replaced.

Electric fuel pump repair

The electric fuel pump is equipped with a non-separable housing, and if it breaks down, the product is replaced with a new one. Without special skills, equipment and spare parts, opening and repairing it is impossible. But some workshops undertake similar work, the price of which is lower than buying a new pump. The main failures of the device are as follows:

1. Damage to brushes and motor commutator. Repair involves replacing them with new ones.
2. Breakage of the plastic coupling connecting the rotor and the motor armature shaft. The clutch is replaced with a new one.
3. Anchor failure. The repair involves rewinding this part.

The described actions allow us to eliminate the gas pump malfunction on all models of the VAZ: 2101, 2102, 2103, 2104, 2105, 2106, 2107, 2108, 2109, 21099, 2110, 2111, 2112, 2113, 2114, Niva, Priora, Kalina, Grant, Vesta and most foreign cars.

Electric fuel pump for VAZ 2106

Due to the simplicity of the “six” design, a more productive electric gasoline pump can be installed on it. However, car enthusiasts themselves do not recommend installing a modern unit unless there is a good reason:

If an ordinary person does a good job, then why? And the additional load on the generator is not really needed. IMHO