How to judge whether there is carbon deposit on motorcycle?

The method for judging carbon deposition of such motor vehicles is as follows:

According to the query of Pacific Auto Network, the engine is shaking, the cold start is not smooth, the sensor signal is faulty, the three-way catalytic cracking is faulty (that is, the exhaust system is blocked), the idle speed of the vehicle is unstable, the intake air backfires, the exhaust gas explodes, and the vehicle horsepower decreases.

The carbon deposit on motorcycles is mainly the carbon deposit on spark plugs. As for cleaning, it is recommended to go to an auto repair shop and let professionals clean it. It is not recommended to clean yourself.