What Causes Oil Burning in Audi Cars?
1 Answers
"Oil burning" refers to the phenomenon where engine oil enters the combustion chamber of the engine and participates in combustion along with the air-fuel mixture. The detailed situation is as follows: How to Identify: Cold-start oil burning: Every morning when starting the car for the first time, thick blue smoke will be emitted from the rear exhaust pipe. After a while, the blue smoke disappears, and similar situations generally do not occur again that day. Oil burning during acceleration: When the driver steps hard on the accelerator while driving or revs the engine while stationary, a large amount of blue smoke is emitted from the exhaust pipe. In severe cases, the driver can see blue smoke from the side mirror of the exhaust pipe after stepping hard on the accelerator while driving. Causes of the Fault: Due to the inconsistency between domestic fuel quality and international standards, a large amount of carbon deposits can easily form in the combustion chamber during engine operation. Carbon deposits are the root cause of various engine problems. Carbon deposits accumulate in the piston grooves, causing the piston rings to stick together. This results in the piston rings being stuck and unable to seal completely. The "stuck" piston rings greatly reduce the oil-scraping and sealing ability. Additionally, sludge can clog the oil return holes, preventing the engine oil from returning normally, leading to increased oil consumption.
