What are the principles and maintenance knowledge of fuel filters?

For car owners, the cleanliness of the fuel filter inside the car is also very important. The function of the fuel filter is to remove the iron oxide, dust and other solid impurities contained in the fuel, prevent the fuel system from clogging (especially the nozzle), reduce mechanical wear, ensure the stable operation of the engine, and improve reliability.

The structure of the fuel burner is composed of an aluminum shell and a bracket with stainless steel inside. The filter paper component is installed on the bracket. The filter paper is seen as a chrysanthemum to increase the flow area. The EFI filter cannot be connected with the carburetor. Universal filter. Because the EFI filter often bears the fuel pressure of 200~300kPa. Therefore, the compressive strength of the filter is generally required to reach more than 500kPa, and the filter of the carburetor cannot meet the requirements.

The oil filter must be replaced every 30,000 kilometers. If the fuel impurity content is large, the driving distance should be shortened accordingly. The arrow on the fuel filter housing indicates the flow direction of the fuel. When installing the fuel filter, it is not allowed to install it upside down. It has to be replaced even if it works for a short time in the inverted state.