How often should the engine throttle be cleaned, and how often should the spark plug and cylinder pipe be replaced?

Engine throttle cleaning generally refers to Volkswagen Audi series, because this car must be matched after cleaning, otherwise it will cause high idle speed and black smoke. How often do you clean this? There is no definite fixed time. When the engine fails or it is suspected that the idle speed or speed regulation is poor, and the car is difficult to start, it is necessary to clean the throttle at this time.

In addition, the spark plug needs to be done during maintenance, generally not cleaned, but replaced. There is also a spark plug with high pressure and weak fire, that is, the high pressure bag has a strong fire, indicating that it is not the time to start the car; The last one is when the water tank is flooded.

How often should the cylinder pipeline be replaced during maintenance, or when sparks are found between the cylinder block and the cylinder, the cylinder pipeline should be replaced.

I hope it will help you, please adopt it.