What does blue smoke coming from the vehicle’s exhaust generally mean?
- The engine is overheating.
- The air filter needs to be replaced.
- Correct answerThe engine is burning oil.
- The catalytic converter is worn out.
Explanation
A vehicle can give off blue smoke from the exhaust when it is burning oil. Poor maintenance and worn engines are typical causes. This blue smoke is harmful to the environment and may be costly. Drivers should have the vehicle checked by a competent person.
Read in Chinese
车辆排气管冒蓝烟通常意味着什么？
- 引擎过热。
- 需要更换空气滤清器。
- 发动机烧机油。
- 催化转换器已磨损。
当车辆燃烧机油时，排气管可能会冒蓝烟。维护不当和发动机磨损是常见原因。这种蓝烟对环境有害且可能导致高额费用。司机应请专业人士检查车辆。