What Causes Blue Smoke When Starting a Car?
1 Answers
The reasons for a car emitting blue smoke are as follows: 1. Incorrect engine oil: The viscosity of the engine oil is not properly selected. 2. Carbon deposits: The piston rings lose tension and fail to seal properly due to carbon buildup, allowing engine oil to enter the cylinder through the gaps. 3. Aging or hardening of valve seals: The seals cannot expand and contract with the temperature of the valves, causing engine oil to enter the cylinder during cold starts. 4. Stuck PCV valve: Combustible mixture leaks into the crankcase, thinning and degrading the engine oil, which then enters the combustion chamber and accelerates oil consumption. Solutions for a car emitting blue smoke: 1. Use additives: Repair the cylinder. 2. High-temperature-resistant engine oil: Use high-viscosity engine oil that can withstand high temperatures. 3. Use a high-quality oil filter: Improve the cooling of the engine oil. 4. Repair the cylinder block: Repair or replace the cylinder block.