Causes and Overhaul of Burning Oil in Automotive Engines

Many friends ask about the cause of engine oil burning, how to judge and repair it online. Here, the cause of engine oil burning and maintenance methods are simply told to everyone for their own reference:

First, the performance of the engine burning oil

The main performance of the engine burning oil is that the exhaust pipe emits blue smoke. Engine idling occurs during idle conditions and engine oil is severely missing during a routine maintenance cycle. Then your car has already burned engine oil.

Second, the engine burning oil causes

There are two reasons why the engine burns oil:

1. Rewards wear, which is normal after the vehicle has traveled a certain number of kilometers. The average vehicle is about 200,000 kilometers. Different vehicles, different people use, and different regions have a great influence on the service life of the engine. I don't have much to say about the normal wear and tear of vehicles over a certain number of years of use and mileage. The overhaul is an overhaul.

2. Abnormal wear: The cause of abnormal wear is early wear due to product quality and improper use. If your car has burned oil during the warranty period, please contact the manufacturer's four S shop to negotiate repair or replace the engine.

Third, what parts wear and aging will cause the engine to burn oil

1. The wear of cylinder liners and pistons will increase the clearance of the cylinder wall and cause some oil to enter the combustion chamber.

2. The wear of the piston ring, the weakening or breaking of the piston ring's elasticity, and the sealing of the piston ring causing the seal to loosen and causing some of the oil to enter the combustion chamber.

3. The aging damage of the valve oil seal will also allow some oil to enter the combustion chamber. In particular, the aging of the intake valve oil seal will make it easier for the oil to enter the combustion chamber.

4. Blockage of the exhaust pipe of the engine causes the pressure in the oil chamber to be too high, causing some oil to enter the combustion chamber.

5. The cylinder cushion oil passage and cylinder hedging will also cause some of the oil to enter the combustion chamber.

Fourth, how to determine the fault

1. Check the exhaust pipe is not smooth. If not, clean or replace. After driving for a while, check if the engine oil is missing and if the exhaust pipe still emits blue smoke.

2. Measure the cylinder pressure. The cylinder pressure is normal: it should be the burning oil caused by the aging damage of the valve oil seal.