How often does the car throttle have to be cleaned?

Generally, the throttle is cleaned every 20,000 kilometers. Throttle is a controllable valve to control the air entering the engine. After the gas enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be burned to do work. Failure to clean the throttle valve for a long time will lead to an error in the opening of the throttle valve, and air with impurities will enter the combustion chamber of the engine. These two results will lead to abnormal engine operation, mainly including unstable idle speed, sudden closing of the throttle when driving, reduced power, even difficult starting, and increased fuel consumption. Cleaning frequency of throttle valve: How long the throttle valve will be dirty depends on the quality of air filter, brand and quality of engine oil used, road conditions, temperature conditions, engine working temperature, driving habits and many other aspects. Attention should be paid to throttle flushing and prevention: throttle scaling is mainly caused by oil vapor, followed by particles and moisture in the air, that is to say, using qualified air filters and removing crankcase ventilation pipes, throttle scaling will be much slower. The crankshaft is built in the crankcase, and its lower side is connected with the oil pan. The working temperature of this part is about 100~ 180 degrees.