How many kilometers does the Volkswagen polo throttle have to be cleaned?

Volkswagen polo accelerator is cleaned once every 20,000-40,000 kilometers. Throttle is a controllable valve that controls air to enter the engine. After the air enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, and the combustion is successful. The relevant information is as follows: 1, the upper part of the throttle is the air filter, and the lower part is the engine block or the throat of the automobile engine. 2. Whether the acceleration of the car is flexible has a lot to do with the dirt of the throttle. Throttle cleaning can reduce fuel consumption and make the engine flexible and energetic.