Gaszonasos of a car, how to determine faults and replace the fuel pump

The fuel pump is a special device responsible for the timely movement of fuel from the tank into the injector or the carburetor. Pumping is carried out under high pressure. It is worth noting that without this node, the operation of the motor and the car as a whole is impossible. Diagnostic faults require urgent repair or replacement of the device. About this further in the article.

Baszonasos, where it is located, how it works, how it works

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Repair of gas station

For old cars of Russian production, the fuel pump is easier to replace, rather than repaired, and it is not very expensive. Of course, in our time, the market there are sets of spare parts for a similar unit for the car, however, as most experts in the field of automotive industry believes, it is a waste of money. The only elements that are still worth replacing are cuffs and valves. This is due to the fact that under the influence of time the rubber dries, loses its elasticity and can pass fuel.

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Principle of fuel pump

Two types of fuel pumps are installed in modern cars - electrical and mechanical. Mechanical fuel pumps are used, as a rule, in the fuel systems of the carburetor type, the fuel is supplied to the low-pressure carburetor. As for electric fuel pumps, they are usually used on injection type cars.

Petrol pump VAZ, injector
Petrol pump VAZ, injector

Electric fuel pumps are located inside the fuel tank, and mechanical - outside. Some cars are installed two fuel pumps: one, which operates under low pressure on large volumes, inside the fuel tank, and the second, which operates under high pressure on small volumes, on the engine or near it.

Placing the fuel pump in the car
Placing the fuel pump in the car

Mechanical fuel pumps operate on the principle of suction of fuel from the fuel tank in the power unit. The distance between the pump and the carburetor is small, so they are capable of functioning under low pressure.

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Electrical units as if pushed fuel to the motor. The operation of the electric fuel pump controls the electronic vehicle system, which takes into account the content of the exhaust, the position of the throttle and the fuel ratio to the air.

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Since electrical fuel pumps are functioning under pressure, they quickly heat and sufficiently noisy. That is why they are located in the fuel tank - fuel joined noise by cooling the fuel pump.

Why gas station can fail, reasons

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Such an apparatus as a gas station is able to come into disrepair at the most inopportune moment. Unfortunately, for the most part, the quality of fuel is guilty. Some car owners use poor-quality gasoline without thinking about the deposits for their car. This is due to the fact that during the use of low-quality fuel in the fence, air falls, so the fuel pump is functioning on large revolutions and is not cooled by fuel.

Mechanical gas station
Mechanical gas station

If you are a motorist of this category, one should not be surprised that the fuel pump is constantly changing. Other reasons for the release of fuel pumps include the fault of the impeller, roller wear and others.

How can you understand that the fuel pump has failed, signs of malfunction

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There are a number of features that indicate a fault of the fuel pump:

  1. The engine power is reduced.
  2. When driving, the operation of the power unit is broken.
  3. The emergence of foreign sounds.
  4. The car engine works with failures or does not start.

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How to choose a new fuel pump, to pay attention to

If you doubt what fuel pump is suitable for your car, it is desirable to purchase the same thing that you have installed, or choose it from another manufacturer, but in this case you need to look at the attachments. The fact is that when replacing, they may not come together. In addition, the pumping nozzle of this unit is found in the curved and direct form. The new fuel pump should have the same nozzle as the old one. Otherwise, the rubber hose does not put on him as a result of the fact that it will be disturbed by other parts of the car.

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Tools, spare parts, fixtures, consumables

To replace the benzonasos, you will need tools and materials:

  • Sliding tongs.
  • Pliers.
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  • Cross and flat screwdriver.
  • Keys of different sizes.
  • Rag.
  • Pump for tire swap.
  • WD-40 or any other universal appointment aerosol.
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  • Sealing rubber ring.
  • Fuel supply hose (need if the fuel pump replacement has long been carried out).
  • Pump and mesh.

Choosing a workplace

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Fuel pumping measures are preferably in a room that is well ventilated. The vehicle must be removed from fire sources and heating devices.

Safety technique

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Be careful! Gasoline, which is in the gas tank, is explosive.

Therefore, auto mechanics are strongly recommended to be very careful when conducting work on the replacement of the gas station. Do not forget to wear gloves.

How to remove the fuel pump (step by step)

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  1. Remove the hatch cover, which is in the luggage compartment of the vehicle.
  2. In the power system, we remove residual pressure. To do this, it is necessary to remove the minus cable from the battery, however, the car should be located on an equal territory.
  3. We remove either lower the back of the rear seat, and then remove the floor cover.
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  4. We find the connection zone on the top of the configuration and disconnect them. For easy joining, it is recommended to mark the wires.
  5. With the help of sliding tongs, we turn the plastic ring in the benzobacco hole.
  6. When the remains of gasoline are plug, remove the pump from the car's tank and remove the gasket.
  7. The assembly must be obtained so as not to damage the float, which is on the sensor. If it is impossible to avoid damage to the float or there are symptoms of fuel from it, you need to replace it with a new one. If this is not done, the sensor can show incorrect information.
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  8. Next, decline the bottom glass. In it, as a rule, accumulates a huge layer of dirt. It can be removed using a vet. If it is impossible to pull the glass through the pump hole, since it falls into the fuel tank, you can remove it using the dismantling of the seal manually.
  9. Then remove the filter (mesh).
  10. With the help of pliers, remove the locking pin with the guide.
  11. Disconnect the hose from the fuel pump. It should be remembered that the rubber is capable of losing its elasticity if the replacement has been carried out long ago, therefore it is recommended to replace the hose. To do this, cut it from the fitting.
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  12. We unscrew the fuel consumption pointer and dismantle it from the fuel pump housing, then remove the terminal.

How to put a new fuel pump

The assembly procedure and the installation of the new fuel pump is performed in the order of reverse removal.

Play Council: Check and replace the gaskets

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After replacing the fuel pump, connect the car battery and start it for a while. Then check if the fuel does not flow from the connections, if everything is fine, close the lid and install the rear seat in place. If the gaskets were worn, they must be replaced.

As on Aliexpress to find and order fuel pump, auto parts, GPS navigator at a reasonable price and free shipping

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  • We register on the site. If you already have your own profile, log in to it using a personal login and password.
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  • Go to your profile where you need to fill in the shipping address. This is done exclusively by English letters.
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  • In the search bar, we enter the name of the desired product, such as a gas station or GPS navigator. It is better to do this in English (Gasoline Pump).
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  • We put a tick opposite free shipping.
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  • We choose sorting results by the seller rating.
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  • Go to the product description page, where we choose the required number and click "Buy Now."
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  • Select the shipping address and pay for the order.

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