What causes the BMW X1 to burn engine oil when hot?

[Emily]

Due to poor piston ring sealing, engine oil directly enters the combustion chamber through the leaking piston ring under the action of the oil pump and burns, resulting in blue smoke from the exhaust pipe. There are several reasons for this phenomenon, such as: material aging, carbon deposits jamming, excessive cylinder liner wear, etc. The following are related introductions to determine whether a car is burning engine oil: 1. After a cold start in the morning, check if the exhaust pipe emits blue smoke. When starting the engine, the engine oil in the cylinder will burn under high temperature and high pressure, producing a large amount of blue smoke. 2. While driving the vehicle or stepping hard on the accelerator in place, observe if a large amount of blue smoke comes out of the exhaust pipe. During sudden acceleration, the piston rings move up and down more frequently, and the residual lubricating oil on the cylinder wall is easily brought into the combustion chamber by the piston rings, causing "oil burning."

[LaAniyah]

Answer 1