Is It Normal for a New Car's Exhaust Pipe to Have Black Soot?
1 Answers
It is not normal for a new car's exhaust pipe to have black soot. However, it is normal for the exhaust pipe to turn black after the car has been driven for a while. The main reason for black soot in a new car is incomplete combustion of gasoline. Possible causes include the use of low-quality gasoline or a malfunctioning catalytic converter. Additional information: 1. Degree of soot in exhaust pipes for different car types: Typically, the primary fuel for a car is gasoline, and over time, black soot may appear. 2. Reasons for black soot in the exhaust pipe: (1) Poor performance of the spark plugs. (2) Issues with the oxygen sensor. (3) Incorrect engine start time and ignition timing.