The function of the fuel filter is to remove the solid debris contained in the fuel, prevent the fuel system from clogging (especially the fuel nozzle), reduce mechanical wear, and ensure the stable operation of the engine. In addition, the fuel filter also has the effect of filtering water to avoid fatal damage to the engine.

Fuel filters are divided into two types: one is an external filter, generally located in the lower part of the chassis; The other is a built-in filter, which is located in the fuel tank. Among them, the external type of filter can be divided into ordinary direct type and 2 categories with a return oil pipe.

Different vehicles, the replacement cycle of the fuel filter is different, it is recommended to replace the fuel filter once every 50,000-70,000 kilometers. In areas with poor fuel quality, the filter replacement cycle should be appropriately shortened.

Problems that occur when fuel filters are not replaced regularly
The function of the fuel filter is to filter impurities in the fuel, after a long time of use, the internal fuel filter may be blocked by impurities to affect the oil supply, resulting in reduced oil supply engine starting difficulties. In addition, the fuel filter is blocked for a long time, which can lead to premature damage to the gasoline pump.

The consequences of using a substandard, inferior fuel filter
Poor quality fuel filter, the use of poor material, can not achieve the expected filter effect. If the inferior filter is used for a long time, the filter element may lead to blockage of the oil circuit, resulting in insufficient fuel pressure and the vehicle cannot start.