Black water flows out of the exhaust pipe after using the carbon deposition cleaning agent.

After adding the fuel cleaner, the exhaust pipe turns black, indicating that the fuel cleaner is working again.

After you added it, the carbon accumulated in the combustion chamber was diluted, melted and discharged by the cleaning agent, so the exhaust pipe turned black. After the original carbon deposit is removed, the exhaust pipe will naturally be normal.

It is normal for black water to drip from the exhaust pipe of a car in winter. First of all, we should know that gasoline will form water and carbon dioxide after burning, which is water vapor at high temperature; At low temperature, it condenses into water.

When the ambient temperature is high, the water vapor has been discharged before condensation. When the ambient temperature is low, water vapor will condense into water droplets on the exhaust pipe wall and flow out with the exhaust gas. Black water droplets are because water vapor condenses into water and enters the exhaust pipe.