What Causes White Exhaust Smoke in Winter?
1 Answers
It is the water vapor produced after gasoline combustion, which is normally discharged through the exhaust pipe. Due to the low ambient temperature, the water vapor condenses into small water droplets, becoming visible water vapor to the naked eye. Here are the relevant explanations: 1. Principle: This occurs because gasoline, when completely burned, produces water and carbon dioxide. Water at high temperatures is in the form of water vapor, which is colorless and transparent. When the ambient temperature is low, the white smoke from the exhaust pipe is water vapor. If the condensed water droplets accumulate, they turn into water. 2. Phenomenon: The water droplets discharged from the exhaust pipe are the result of water vapor generated by gasoline combustion condensing in the exhaust pipe and muffler. When the ambient temperature is low, the water vapor condenses into water droplets on the exhaust pipe walls and is discharged with the exhaust flow. This phenomenon is common in vehicles with well-functioning engines. If you notice jerky driving along with white smoke and water discharge from the exhaust pipe, and the radiator is low on water with signs of bubbling, it is highly likely that the cylinder head gasket is leaking, in which case it needs to be replaced.
