What is a fuel filter?

Fuel filter function

The average driver knows that the three filters need to be replaced during maintenance. Which three filters? Oil filter, air filter and air conditioning filter. Why should the fuel filter be changed regularly? In fact, the fuel filter is connected in series on the pipeline between the fuel pump and the inlet of the throttle body. Its function is plainly a car wearing part that filters the fuel impurities of the car.
Because of the uneven quality of oil, coupled with difficult conditions during oil transfer and storage, impurities in the fuel and dust entering during the refueling process will surely enter your fuel tank. If these impurities are not filtered out and brought into the fuel supply system and the engine, over time, the cylinder will be damaged or the fuel injection nozzle will be blocked, which will affect the engine performance and shorten the engine life.

Difference from oil filter

The working pressure and temperature resistance of the fuel filter are much lower than those of the oil filter. As the engine oil, the temperature of the oil can reach a few hundred degrees Celsius. The high temperature resistance of the oil filter is naturally important. The cleaner only needs to satisfy the unobstructed fuel supply under natural ambient temperature.
However, its filter efficiency requirements are higher than the oil filter. This is due to the accuracy of the fuel injection system of the engine. The fuel injection pressure is as high as 2000 bar. And even scrapped fuel injectors.

Consequences of using substandard and inferior fuel filters

The inferior fuel filter is made of poor material and the filtering effect is not good. Using the internal filter element for a long time may cause the oil path to be blocked, resulting in insufficient fuel pressure and the vehicle cannot start. At the same time, it will also cause abnormal pressure in the fuel system, which directly leads to insufficient engine power or insufficient combustion, and damages valuable components such as three-way catalysts and oxygen sensors.

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