<p>To Overcome carbon deposits this is very simple, when you drive a vehicle, run the vehicle at high speed approximately 80 to 90 km / h for approximately 10 minutes to 15 minutes. This is done with the aim that the temperature of the gas can rise and finally carbon and crust can be clean themselves or can be called self cleaning. </p><p>Besides that, a simple way to clean the spark plug from carbon deposits or crust by checking the spark plug every 10,000 km or every 1 year. if carbon or crust is found on the tip of the electrode, it can be cleaned with cleaning fluid or by sanding. </p><p>Maybe that's all, tips from me about how to easily clean carbon on the spark plug. Hopefully helpful, and thank you.</p>