Gasoline filter assembly, which should be built-in. The built-in gasoline filter is assembled with the oil pump in the oil tank:
1. The fuel filter is connected in series on the pipeline between the fuel pump and the oil inlet of the throttle valve body. The function of the fuel filter is to remove the iron oxide, dust and other solid impurities contained in the fuel, so as to prevent the fuel system from being blocked, especially the fuel injection nozzle. Reduce mechanical wear, ensure stable engine operation and improve reliability;
2. The structure of the fuel injector is composed of an aluminum shell and a bracket with stainless steel inside. The bracket is equipped with efficient filter paper, which is chrysanthemum shaped to increase the flow area;
3. The EFI filter cannot be used with the chemical oil filter. As the EFI filter often bears the fuel pressure of 200300KPA, the pressure resistance of the filter is generally required to be above 500KPA, while it is unnecessary for the chemical oil filter to reach such a high pressure;

The main functions of the gasoline filter are:
1. Filter impurities in gasoline;
2. Make the gasoline entering the engine for combustion clean and burn more fully;
3. Reduce the formation of carbon deposits in the cylinder and improve the power input;

Generally, the fuel filter element outside the fuel tank should be replaced every three times, and the fuel filter element inside the fuel tank should be replaced every 30000 km:
1. Generally, the gasoline filter element does not need to be checked, as long as it is replaced regularly;
2. There are two kinds of gasoline filter elements, one is the built-in gasoline filter element, the other is the external gasoline filter element;
3. If the gasoline filter element is not replaced for a long time, the filter element inside the steam filter will be too dirty to play a filtering role. If it is serious, the gasoline will be blocked, and the vehicle cannot be started or stalled during driving. Therefore, the gasoline filter needs to be replaced regularly.