How Often Should the Intake Manifold Be Cleaned?

[OMaria]

The intake manifold should be cleaned every 20,000 to 40,000 kilometers. The engine intake manifold does not require frequent cleaning. Generally, cleaning is only necessary when the engine exhibits adverse reactions caused by carbon buildup, such as idle shaking or sluggish acceleration. A cleaning interval of 20,000 to 40,000 kilometers is considered reasonable under normal circumstances. There are two methods for cleaning the intake manifold: chemical cleaning (via intake system cleaner) and disassembly cleaning. Chemical cleaning is currently the more mainstream method and is widely promoted by 4S shops and repair shops. Disassembly cleaning involves removing the engine intake manifold for thorough cleaning, but due to its time-consuming and labor-intensive nature, many 4S shops or repair shops do not offer this service.