Why Does the Exhaust Emit White Smoke?

[SebastianMarie]

The reasons for white smoke from the exhaust are: 1. Normal gasoline combustion: After gasoline burns normally, it produces water and carbon dioxide. When water encounters high temperatures, it turns into steam, resulting in white smoke from the exhaust pipe; 2. Damaged cylinder gasket: If water enters the cylinder, it can also cause white smoke from the exhaust pipe; 3. Poor gasoline quality: If the gasoline has a high water content, since water cannot burn, it will be expelled from the exhaust pipe, leading to white smoke. The reasons for excessive exhaust emissions are: 1. Engine misfire; 2. Spark plug oil leakage; 3. Failed catalytic converter; 4. Dirty intake system, exhaust system, or fuel system; 5. Faulty oxygen sensor; 6. Aging components, poor contact, or poor sealing; 7. Incomplete fuel combustion.