What Causes Water Leakage from a Car's Exhaust Pipe?
1 Answers
Exhaust pipes drip water because gasoline contains trace amounts of moisture, which cannot be burned. During combustion in the engine's combustion chamber, these trace amounts of moisture are separated from the gasoline. This moisture is then expelled with the exhaust gases. Inside the cylinder, the temperature is quite high, but as the moisture enters the exhaust pipe, it rapidly cools and condenses, forming water vapor that adheres to the inner walls of the exhaust pipe. As more water vapor accumulates, it eventually forms droplets that flow out of the exhaust pipe. Thus, water dripping from the exhaust pipe does not indicate a car malfunction. In fact, it can even suggest that the engine is of good quality, as the formation of water droplets indicates that the fuel is being burned efficiently.