What Causes a Car to Emit White Smoke?

[VonRyan]

Reasons for a car emitting white smoke: 1. Excessive moisture in gasoline, which cannot burn and is expelled through the exhaust pipe, causing white smoke; 2. Water entering the cylinder can also lead to white smoke from the exhaust pipe. If the cylinder head gasket is damaged, it may result in poor sealing between the cylinder block and cylinder head, allowing water to flow into the cylinder or even directly into the oil passage; 3. White smoke during cold starts, which disappears as the engine temperature rises. This phenomenon occurs because the engine is burning fuel efficiently, and the hot vapor encounters cold air, producing white smoke, which is a normal occurrence.