What Causes White Smoke During Cold Start?
1 Answers
The reasons for white smoke during cold start: 1. The vehicle's air filter is dirty, causing insufficient air intake; 2. Carburetor malfunction; 3. The oxygen sensor in the exhaust pipe is contaminated, preventing the computer from providing correct air-fuel mixture information; 4. Water accumulation in the fuel tank; 5. Damaged cylinder head gasket; 6. Cracks in the cylinder block or damaged cylinder liner sealing ring; 7. Degraded engine oil. Normally, white smoke during cold start will gradually disappear as the engine temperature rises. This type of white smoke occurs because the engine is burning fuel efficiently, and the white smoke is caused by hot steam meeting cold air, which is a normal phenomenon. In winter, due to low temperatures, white smoke is commonly seen from vehicle exhaust pipes, which is also normal. If the car continues to emit large amounts of white smoke under normal temperatures, it is recommended to visit a professional repair shop for inspection and timely resolution of the issue.