If the oil filter is blocked, the cold car oil will not come up, and the pressure is insufficient, the oil sensor lamp will light up, but the oil sensor lamp will go out after the hot car, the oil pump is broken, the oil lamp will always be on, and the valve lifter will have abnormal noise.

The specific analysis is as follows:
1. It is easy to stall. After the gasoline filter is blocked, the delivery of gasoline is affected, resulting in insufficient fuel supply to the engine. The phenomenon of car rubbing is obvious during driving or shifting, and it is easy to cause flameout when idling;
2. Weak driving. Due to poor fuel supply, the engine power is reduced, the vehicle is weak and the speed of the vehicle is reduced. A car with a speed of more than 100kmh can drop to a speed of 7080kmh;
3. Increased mechanical wear. Because impurities are not filtered, the oil circuit and fuel injection system will be corroded and damaged after a long time. The function of the gasoline filter is to filter out solid impurities such as iron oxide and dust or water contained in the gasoline. On the one hand, it can reduce the chance of the fuel injector being blocked by impurities, on the other hand, it can also ensure the quality of gasoline flowing into the fuel system, reduce mechanical wear, and ensure the stable operation of the engine. Therefore, the gasoline filter should be replaced regularly.