The malfunctions of the oil filter include: the oil lamp jumps, the lubrication is not smooth, the oil is burning, etc. Generally, the filter is clogged, resulting in low oil pressure and high oil temperature.

The function of the gasoline filter is:
1. The oil filter is abbreviated as the steam filter. The gasoline filter is divided into a carburetor type and an electronic injection type. For a gasoline engine using a carburetor, the gasoline filter is located on the inlet side of the fuel transfer pump, and the working pressure is low. Generally, a nylon shell is used. The gasoline filter of an EFI engine is located on the outlet side of the fuel transfer pump. The working pressure is relatively high, and a metal shell is usually used;
2. The filter element of the gasoline filter mostly uses filter paper, and there are also gasoline filters that use nylon cloth and polymer materials;
3. The main function is to filter out impurities in gasoline. The gasoline filter is inside this type of gasoline filter, and the folded filter paper is connected to the two ends of the plastic or metal filter. After the dirty oil enters, it is filtered by the outer wall of the filter through layers of filter paper to reach the center, and clean fuel flows out.