Why should the car clean the fuel system? What effect does it have on the engine?

It is of great benefit to clean the automobile fuel system regularly. Causes of carbon deposition and deposits in fuel system: First, the fuel itself contains colloid, impurities, dust, moisture and so on. And deposits such as sludge are formed in the fuel tank and the oil inlet pipe over time; Secondly, unstable components such as olefins in gasoline are oxidized and polymerized at high temperature to form mucilage and resinous viscous substances. These viscous substances stay in the nozzle, intake valve and other parts, and the deposits will become hard carbon deposits during combustion. In addition, traffic jams often make cars idle at low speed, which will aggravate the formation and aggravation of carbon deposits and sediments. If the fuel system is not cleaned, it will do great harm to your car. First, carbon deposits and deposits will block the needle valve and valve hole of the injector, which will affect the performance of the precision parts of the injection system, resulting in poor fuel injection, poor atomization and decreased power performance. Secondly, carbon deposits and deposits will lead to lax intake valve closure, cylinder pressure drop or even backfire, which will lead to unstable engine idle speed, increased fuel consumption and deterioration of exhaust emissions. Carbon deposition on piston crown and cylinder head may easily lead to local overheating of combustion chamber and gasoline preheating, which may lead to engine knocking and other failures. These faults will shorten the service life of the engine. Therefore, it is very important to maintain the fuel system regularly. Maintenance methods of fuel system include: (1) adding high-quality fuel system cleaner regularly (once every 20,000 kilometers). It can effectively remove gum, carbon deposits and deposits in the combustion chamber, intake and exhaust valves, fuel nozzles and fuel pipelines during vehicle driving, and keep all parts of the fuel system clean. It can also decompose the water in the fuel, improve the fuel label and reduce the emission of harmful substances. Especially after adding inferior fuel, it should be used at any time. (2) Regularly use high-quality oil nozzle system cleaning agent and special equipment to clean the oil nozzle (once every 20,000 kilometers). It can remove the carbon deposit in the fuel injector and eliminate the problems of engine jitter, hysteresis, poor atomization and poor acceleration. So that the oil-gas mixing ratio is more accurate. Restore power, save fuel, reduce exhaust emissions, and have no harm to injectors, oxygen sensors and three-way catalytic converters. (3) Regularly clean the throttle system (once every 20,000 kilometers) with high-quality throttle or air intake system cleaning agent. We can also use special cleaning equipment for cleaning, which can not only remove the glue and deposits in the throttle and intake manifold, but also remove the carbon deposits in the intake valve, combustion chamber and three-way catalyst. Restore normal compression ratio, eliminate idling instability, knocking, fire and other faults, make the oil-gas mixing ratio more accurate, save fuel, reduce exhaust emissions, eliminate engine weaknesses and poor acceleration, improve automobile power and driving performance, protect all parts of the fuel system and prevent rust and corrosion.