1. Blue smoke will be emitted from the exhaust pipe after the cold car starts in the morning. When the car is cold in the morning, check whether the exhaust pipe emits blue smoke because when the engine is not running for a long time, the oil will flow into the cylinder through the gap of the valve oil seal under the action of gravity. As soon as the engine is started, the engine oil in the cylinder will burn under the action of high temperature and high pressure, producing a lot of blue smoke.
2. When the vehicle is driving or slamming on the accelerator, a lot of blue smoke is emitted from the exhaust pipe.
3. In addition to the exhaust pipe, it is also necessary to observe whether the oil port will emit blue smoke from time to time.
In any case, blue smoke is emitted from the exhaust pipe and blue smoke is emitted from the oil port from time to time, indicating that the engine is seriously worn and the vehicle needs to be repaired in time, otherwise it will cause serious accidents.
4. The oil is lost too quickly.