Is it necessary to clean up the car carbon deposit?

According to a director of automobile maintenance and after-sales service department, a certain degree of carbon deposition is allowed: generally speaking, our store will advise car owners to clean up carbon deposition every 20-30 thousand kilometers, and the more frequent the carbon deposition, the better. In the case of normal vehicle performance, there is no need to spend extra money at all. Therefore, some repair shops say that "if your car has carbon deposits, you have to get rid of them quickly", which is irresponsible and misleading. Of course, the accumulation of carbon deposits will indeed bring some problems, which will lead to engine failure and occasional flameout, such as carbon deposits in the combustion chamber, which will lead to engine knocking. Direct injection mainly refers to the top of the piston and the periphery of the nozzle, while electric injection mainly refers to carbon deposition on the manifold and valve. In this case, most direct injection vehicles can directly use the combustion chamber for carbon invincible cleaning, which is very convenient and the price is very low. The effect is good.