How to clean Buick Sail engine, throttle and idle power?

The engine will produce carbon deposits when it is working, and the carbon deposits of many parts need to be cleaned regularly, including throttle body, idle valve, air intake, fuel injector, combustion chamber, oil gallery, three-way catalyst and so on. These parts need to be cleaned separately. If the vehicle is driving in the urban area for a long time, it is suggested that the vehicle should clean the throttle body and idle valve every 65,438+05,000 km and the fuel injector every 30,000 km. According to your service mileage and service life, you only need to replace the oil filter and air filter.