The diesel filter mainly filters out the solid impurities (iron oxide and dust, etc.) contained in the fuel, thereby protecting the oil pump nozzle, cylinder liner and piston ring. Not only can the wear and tear be greatly reduced, but also blockage can be avoided. Don’t underestimate the role of diesel filters. You must know that the sulfur content in domestic diesel is very high. If there is no diesel filter, sulfur will directly react with water to form sulfuric acid, which will corrode the internal parts of the engine. Therefore, the diesel filter is extremely important (the main method of removing water is precipitation).

The performance of the diesel filter element is dirty
If the diesel filter element is very dirty, there must be no way to ensure that the fuel is clean when it enters the engine cylinder and burns. Not only will the power of the car be severely reduced, but it will even affect the service life of some parts (sulfur and water react to form sulfuric acid), and the maintenance cost at that time can be said to be quite high. Therefore, when we find that the color of the filter element inside the diesel filter has been noticeably black, it means that the filter element is seriously polluted by harmful substances and needs to be replaced in time.