Audi Q5 14km clean DPF.

When the car is used for 2 years or driven to 4W kilometers, it is usually necessary to remove carbon deposits.

The substance left in the nozzle, throttle, oil pipe, spark plug, cylinder head, inner wall and other parts due to insufficient combustion of gasoline in the cylinder, and then the black colloid produced by repeated high temperature of the engine is called carbon deposition. The harm of carbon deposits to automobile engines. If the carbon deposits are not cleaned for a long time, the power and fuel consumption of automobile engines will be reduced, the engine will be abnormal and the idle speed will be unstable.