What Causes Black Exhaust Pipes?

[NevaehLynn]

Reasons and solutions for black exhaust pipes are as follows: 1. Poor fuel quality. Poor fuel quality not only leads to incomplete combustion but also causes carbon deposits to form in the engine. The optimal air-fuel ratio is 14.7:1, which ensures maximum combustion efficiency and reduces pollutant emissions. Solution: Try to use the same brand of engine oil. 2. Poor driving habits. Carbon buildup in cars is closely related to the driver's poor habits. Common behaviors like idling with the air conditioning on or not warming up the car in winter can result in an improper air-fuel ratio, causing the exhaust pipe to turn black. Solution: Develop good driving habits.