How to Deal with Black Soot in the Exhaust Pipe?

2 Answers
VonDelaney
07/23/25 7:59pm
You can use carbon deposit cleaners, such as cleaning agents and stainless steel cleaning powder. Below is an introduction to relevant knowledge about exhaust pipes: 1. Reduce pressure: It can discharge the exhaust gas generated by the engine and reduce pressure, which is an important guarantee for the continuous operation of a car. 2. Reduce noise: In the entire exhaust pipe system, there are two noise reduction systems. The first uses the exhaust manifold of the engine to discharge exhaust gas, and the second is the main muffler at the tail of the exhaust pipe. Through these two steps of noise reduction, the sound of exhaust gas discharge can be basically reduced to a reasonable range. 3. Filter exhaust gas: It can reduce the pollution of exhaust gas discharge to the air.
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LondonDella
08/10/25 5:57pm
Last time, there was black soot accumulated at the exhaust pipe outlet of my car, which was quite annoying. I looked it up and found that this might be caused by incomplete fuel combustion leading to carbon buildup. It's not difficult to deal with: first, use a soft cloth or a specialized cleaner to scrub the inside of the exhaust pipe to remove surface carbon deposits, but avoid using sharp objects to prevent scratching. Then, check if the spark plugs are worn out, as incomplete ignition can make soot accumulation worse; also inspect the air filter—if it's clogged, it can affect oxygen intake and lead to poor combustion. If there's a lot of black soot, I would add a cleaning additive to the fuel and drive on the highway for several dozen kilometers to let the engine heat up and automatically burn off the carbon deposits. For regular maintenance, make it a habit: check the exhaust pipe condition every quarter and use high-quality fuel to reduce impurities. When changing the engine oil, also inspect the fuel system to maintain efficient combustion and minimize soot buildup.
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