How to judge whether your car has more carbon?

First of all, we need to know where carbon deposition will occur. There are four places, throttle, air inlet, oil nozzle and piston top. Now, no matter where the carbon deposits are cleaned, most of them are cleaned without disassembly. Unless the carbon deposition is very serious, it may need to be disassembled and cleaned, otherwise it will not be disassembled.

Cleaning without disassembly can only be done in the above four places. If the carbon deposition is not serious, cleaning without disintegration is effective. Don't listen to people say it's useless not to open and clean. Because we checked, after washing, we checked the carbon deposit on the fuel injector and valve, and the washing was relatively clean.

Knowing the part of carbon deposition, you can look it up. Use your eyes, this is the most intuitive and important method. As long as the intake hose is removed, the throttle valve can be clearly seen, and the piston top and valve need to be examined by endoscope. But it takes a little experience to know how serious it is and whether it has any effect, otherwise you won't understand it after reading it.

Computer testing shows that this method is simple and does not need to disassemble anything, but generally it can only detect the carbon deposition of the throttle. When idling, the larger the throttle opening is, the more serious the carbon deposition is.