How many kilometers does the car clean up carbon deposits?

Under normal circumstances, it is necessary to clean up the engine carbon deposit when the car is used for 2 years or when it travels to 4W kilometers. The black colloid produced by insufficient combustion of engine oil in the fuel injector, throttle, oil circuit, spark plug, cylinder head and inner wall is called carbon deposit. The harm of carbon deposit to automobile engine, if carbon deposit is not cleaned for a long time, it will lead to the decrease of automobile engine power, increase of oil consumption, abnormal engine noise and unstable idle speed. If it is a new car, the engine has insufficient power and high fuel consumption, it is recommended to clean the throttle or do an endoscope to see if it is caused by carbon deposition. If it is an old car, it has run more than 6.5438+10,000 kilometers, you can choose to clean it with detergent or disassemble it for cleaning.