What causes a broken gasoline pump? What are the symptoms of a broken gasoline pump

What causes the broken oil pump is as follows:1. The oil volume of the oil tank is insufficient, because the oil level is too low, the oil pump motor can not be cooled and lubricated, which will lead to overheating and even shutdown of the motor, if the oil pump is often in this working state, the premature damage of the oil pump is inevitable;

2. Poor oil quality, due to the relatively poor oil quality, the fuel tank will be filled with various impurities or foreign matter, and the fuel chestnut will suck the fuel through the bottom of the filter and pump it into the engine. In this process, the impurities of large particles are blocked by the filter, and the impurities of small particles are sucked into the oil pump motor, which will inevitably aggravate the wear of the oil pump motor and cause early damage to the oil chestnut;

3. The gasoline filter has not been replaced for a long time. The gasoline filter has not been replaced for a long time, the gasoline filter supply system is seriously blocked, the gasoline pump is hard, and the gasoline pump is damaged under long-term high load.

The fuel delivery of the EFI engine is adsorbed by the pressure adsorption of the electric gasoline pump installed in the gasoline tank, and its motor part is also soaked in the gasoline, and the gasoline cools the high temperature generated by its work, in view of this working principle it is vulnerable to damage The principle is as follows:

2. Unclean gasoline blocks the straw and diaphragm;

3. The most critical point is that some car owners turn on the electric fire switch for a long time, the engine is not ignited, sit in the car to listen to the sound and talk, because the circuit is connected to the gasoline pump and start to work and can not release the pressure to burn the motor and diaphragm to cause the pressure to drop or burn to death, I know, as long as there is a brand of gasoline pump manufacturers in China, the quality is reliable, such as your oil pump is damaged many times, please see if your habits are good.

The gasoline pump is broken, the engine fault light will be on, and the engine will shake abnormally. If the gasoline pump is broken, there will be the following symptoms:1

Completely broken: The gasoline pump is completely broken, and the oil cannot be pumped at all, causing the fuel supply system to collapse and the vehicle to not start; 2.Not completely broken:

If the check valve of the gasoline pump is damaged, it will lead to no residual pressure, and the fuel pressure will not reach the specified fuel pressure value, which will greatly reduce the atomization effect, and it will be difficult to start, and it will need to be ignited many times for a long time. The wear of the impeller of the centrifugal pump will lead to a decrease in the oil supply pressure, the gasoline pump runs without sound, does not supply oil, accelerates weakly, and has abnormal noises and buzzing sounds when driving. Causes of premature failure of gasoline pumps:

However, you get what you pay for, and the gasoline from those small gas stations often contains a lot of impurities and foreign substances, which can cause great damage to the engine and gasoline pump. After a long time, something will definitely happen; 2.The gasoline filter was not replaced in time.

When the dashboard is already lit up, it means it's time to refuel. Gasoline pumps require cooling and lubrication of gasoline. If there is less oil in the tank and the heat dissipation effect is poor, it will increase the operating power of the motor and will also cause damage to the gasoline pump.

If the gasoline pump is completely damaged, the vehicle will not be able to start, if the start is successful many times, it will cause the oil pump to run without sound, resulting in no fuel supply, weak acceleration, the reason for the premature damage of the gasoline pump is the use of inferior gasoline, and the gasoline filter is not replaced in time.

The reasons for the failure of the gasoline pump are as follows: 1. The oil in the fuel tank is insufficient. When the fuel level warning light in the meter is lit, it means that there is only about 7 liters of trapped fuel in the tank.

2. The oil level is too low, resulting in the fuel pump motor can not be fully cooled and lubricated, and the electric source will overheat or shut down. If the pump is always in this working condition, early damage to the pump is inevitable. 3. Poor oil quality.

When the oil quality is poor, the fuel tank is filled with various impurities and foreign matter, which are pumped to the engine along with the fuel. In this process, the impurities of the large particles are shielded by the filter, but the impurities of the small particles are sucked in by the oil pump motor, and the wear of the oil pump motor is intensified, resulting in early damage to the oil pump.

The reasons why a car gasoline pump is always bad are as follows: Oil quality is the most direct cause of oil pump damage: Solution:

Doing so will shorten the life of the oil pump and burn out the oil pump if there is too little fuel or if it is consumed as much as possible.

The phenomenon of a broken gasoline pump is as follows:

Cause of failure: Gasoline pump check valve damage: no residual pressure, resulting in difficulty in starting.

Centrifugal pump impeller wear: the oil supply pressure is reduced, and the acceleration is weak.

Carbon brush wear: The gasoline pump stops and cannot be started, in this case, you can knock on the bottom of the fuel tank, and the oil pump can still run.

Mechanical faults such as rotor stagnation: The working current of the oil pump increases, resulting in damage to the relay or fuse.

2. It is not easy to start the hunger and tease the accompaniment, and it takes a long time to play the key.

The fuel supply of the gasoline pump is insufficient, depending on the stroke of the pump membrane, and the large stroke of the pump should be more. If the engine consumes a lot of fuel, but the actual fuel supply is small, this situation means that the fuel supply of the gasoline pump is insufficient, and the oil level of the carburetor float chamber will be reduced, and the engine power will be insufficient.

3. The engine fault light is on.

Under normal circumstances, when the gasoline pump is short of oil, the engine fault light is on, do not wait for the gasoline lamp alarm and do not refuel, because the gasoline pump relies on gasoline to conduct heat and cool down, and when the gasoline liquid level is too low, it cannot play the role of cooling and heat dissipation, reducing the service life.

4. Abnormal noise, there is a buzzing sound when driving.

This may be due to the non-standard installation of the oil pump, which leads to resonance during the operation of the oil pump; Or an incompatible oil pump is used, resulting in excessive flow and noise.

5. Engine shake refers to the abnormal phenomenon of locust.

Most of them are gas blockages in the pipes of the fuel system. The specific reason may be that the fuel tank sucks in air on the basis of less oil, or the engine shakes due to the formation of air resistance caused by the oil vapor in the pipe due to the high weather temperature.

Symptoms of a broken gasoline pump in a car:

Completely broken: The gasoline pump is completely broken, and it can't pump oil at all, causing the fuel supply system to collapse and the vehicle cannot be started.

Not completely broken: the check valve of the gasoline pump is damaged, which will lead to no residual pressure, the fuel pressure will not reach the specified fuel pressure value, the atomization effect will be greatly reduced, the start will be difficult, and it will take a long time to ignite many times.

The main installation types of electric gasoline pumps for gasoline injection engines are installed in the fuel supply line or in the gasoline tank. The former has a large range of layout, does not need to design a special gasoline tank, and is easy to install and disassemble.

But the oil suction section of the oil pump is long, easy to produce air resistance, and the working noise is also larger, in addition, the oil pump is required to never leak, and this type has been used less on the current new vehicle. The latter is the main trend of simple fuel lines, low noise, and low requirements for multiple fuel leaks.

Weak engine acceleration, difficulty starting, engine shaking, noise, frustration during emergency refueling, engine failure light on, etc.1. If the petrol pump breaks down completely, it may not pump oil at all, affecting the collapse of the fuel supply system and preventing the car from starting2. If the check valve of the gasoline pump is damaged, the leakage will affect the residual pressure, the fuel pressure will not reach the specified fuel pressure value, the atomization effect will be greatly reduced, the starting will be difficult, and the ignition time will be long2.

The wear of the impeller of the centrifugal pump will affect the drop of oil supply pressure, and the gasoline car has no sound of rotation, no fuel supply, weak acceleration, and noise and buzz when driving.

The symptoms of a broken gasoline pump include the following:1The engine is difficult to start or does not start.

Since the main function of the gas pump is to send gasoline from the tank to the engine, if the gasoline pump is broken, the engine may not have enough fuel to start. 2.The engine suddenly stalled while driving.

When the gasoline pump is unable to extract enough fuel, the engine may stall while driving. This usually happens when accelerating or driving at high speeds. 3.

The engine loses power or accelerates poorly. If the output pressure of the petrol pump is insufficient, it may cause the engine to lose power or accelerate poorly. 4.

There is an abnormal noise in the engine. When a gasoline pump is damaged, it may produce noise or murmur, which is usually caused by wear and tear on the pump blades or electronic components. 5.

Wasted fuel or increased fuel consumption. If the gasoline pump can't provide enough fuel, the engine consumes more oil to keep it running, resulting in increased fuel consumption. In short, once you notice any of the above symptoms, it may be caused by a damaged petrol pump.

In order to avoid more serious problems, it is recommended to send the vehicle to a professional car repair shop for inspection and repair as soon as possible.