Why Does a Car's Exhaust Pipe Drip Water?

[ODominic]

Exhaust pipe dripping is caused by water vapor generated after gasoline combustion. Below is a detailed explanation of why a car's exhaust pipe drips water: 1. Cause of Dripping: The water vapor produced from gasoline combustion condenses in the exhaust pipe and muffler. When the ambient temperature is high, the water vapor is expelled before it can condense. However, when the ambient temperature is low, the water vapor condenses into water droplets on the exhaust pipe walls and is expelled with the exhaust. 2. Precautions: If the engine emits a large amount of white smoke (water vapor) while running, check the fuel tank for water accumulation. Also, inspect whether the cylinder gasket is damaged, if there are cracks in the cylinder block, or if the cylinder liner seal is intact. However, if the exhaust pipe emits black smoke or drips 'black water,' this indicates that the engine might be burning engine oil.