Principle of fuel filter and maintenance of fuel filter

It is very important to clean the fuel filter. The fuel filter is on the line between the fuel pump and the inlet of the throttle body.

The function of the fuel filter is to remove solid matters such as iron oxides and dust contained in the fuel oil to prevent clogging of the fuel system, reduce mechanical wear, ensure stable operation of the engine, and improve reliability. The structure of the fuel injector is made of aluminum. The shell and a stainless steel stent are assembled, and a high-efficiency filter paper sheet assembly is arranged on the stent. The filter paper sheet is seen as chrysanthemum shaped to increase the flow area, and the electrospray filter cannot be used with the carburetor filter. Because EFI filters often withstand 200 ~ 300kPa fuel pressure. Therefore, the pressure resistance of the filter is generally required to reach 500 kPa or more, and the filter of the carburetor cannot meet the requirements.

The fuel filter must be changed every 30,000 kilometers. If the fuel impurity content is large, the travel distance should be shortened accordingly. The arrow on the fuel filter housing indicates the flow direction of the fuel. When installing the fuel filter, no flipping is allowed. Even if it works in a flip state for a short time, it must be replaced.

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