How Often Should the Intake Valve and Throttle Body Be Cleaned?

[VonMiguel]

Throttle bodies generally need cleaning every 20,000 to 30,000 kilometers, but there is no strict standard—they can be cleaned when dirty. If there is oil accumulation or carbon buildup in the throttle body, it is necessary to promptly visit a 4S shop or repair shop to clean the throttle body. Below are the specific reasons for a dirty throttle body and precautions to take: Specific reasons for a dirty throttle body: A clogged intake passage can cause idle fluctuations, and carbon deposits or oil accumulation in the throttle body are the most common causes of unstable idling. Carbon buildup in the throttle body affects its opening, which in turn affects the air intake volume, causing the engine speed to fluctuate erratically during cold starts, accompanied by strong vibrations. Precautions for a dirty throttle body: Severe oil accumulation or carbon buildup in the throttle body, including a dirty intake passage, can make it difficult to start the car in cold weather. A dirty throttle body should be cleaned, as throttle body cleaning is considered a routine maintenance task. Spark plugs can also accumulate carbon deposits, which can be cleaned to restore their performance.