When should I do carbon clean?
Actually, the answer of this question is different to everyone. When you find that pedal reaction is not as good as before, high fuel consumption, it’s hard to ignite and jitter at idling. There’re common problems from carbon deposits (but sometimes it’s spark plug or nozzle need to be cleaned, also. )
RUNMAX always recommends that make carbon clean in your every maintenance. Keep a good habit of regular carbon removal. In addition to maintaining the original power of the car, you don't have to worry about fuel consumption. DPF or catalyst blockage needs to be replaced (300~5000 dollars cost). The smart car owners know the importance and safety of regular maintenance and carbon clean.