Where is the Accord carbon deposit?

For parts of vehicle engine that produce carbon deposits, such as crankcase, throttle, valve seat, fuel injector, air intake, etc., according to your vehicle condition and the control technology currently adopted by the vehicle, the throttle and fuel injector are maintained most frequently, followed by the air intake. The normal cleaning kilometers are 20,000 kilometers, but this is only a guiding value. If the vehicle drives in the urban area with low temperature and low speed for a long time, it may be shortened. If the vehicle often drives at medium or high speed, it will be 2000. The reason is determined by the control characteristics of EFI engine. Every time the cylinder works, it injects oil first and then ignites. When we put out the engine, the ignition device was cut off immediately. However, the gasoline sprayed by this working cycle cannot be recovered and can only be attached to the intake valve and the combustion chamber wall. Gasoline is volatile, but wax and gum in gasoline will remain. In the long run, the wax and gum in gasoline accumulate thicker and thicker, and harden after repeated heating, forming carbon deposits. If the engine burns engine oil, or the quality of gasoline is poor and there are many impurities, then the valve carbon deposition is more serious and forms faster. Additives sold in gas stations also have effects, but they only play a maintenance role, which is helpful to the fuel system to some extent, and has little to do with the intake system, but it is not very cost-effective from the price analysis.

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