Common faults of Highlander 3.5v6

Causes and preventive measures of engine oil burning in Highlander

Engine oil itself is consumed to some extent, and excessive consumption is the problem of burning engine oil. There are many factors that affect engine oil combustion, such as fuel quality, road conditions, driving habits and maintenance habits. The following reasons will aggravate the oil consumption, cause the oil to burn and make the vehicle appear:

1, carbon deposit appears in the combustion chamber, which makes the piston ring gas ring stuck and causes poor sealing.

2. Sludge is produced in the lubrication system, which blocks the oil return hole and weakens the oil scraping performance.

3. Wear occurs between the piston and the cylinder wall.

4, valve seal corrosion aging sealing performance failure.

In addition, there is a crankcase ventilation system (waste gas valve) on the car now, and if there is a problem, it will also increase the oil consumption.

Combustion engine oil means that the engine oil enters the combustion chamber of the engine and participates in combustion together with the mixed gas. The phenomenon of "burning engine oil" in vehicles will cause the oxygen sensor of vehicles to be damaged too quickly, which will lead to the increase of carbon deposition in the combustion chamber, unstable idle speed, weak acceleration, rising fuel consumption and excessive exhaust emissions.

Precautionary measures for fuel:

1. Use high-quality engine oil:

The oil is easy to corrode and age at high temperature for a long time, which leads to the thinning of oil film and easy to escape to the combustion chamber to participate in combustion. Therefore, using high-quality engine oil can greatly delay this phenomenon.

2. Pay attention to the cleanliness of the fuel circuit:

Carbon deposition is inevitable in the combustion process of fuel, which is the root cause of some automobile faults, such as aging of valve oil seal and widening of piston-cylinder wall gap. They are directly or indirectly related to the formation of carbon deposits. Considering the relationship between domestic oil products, it is necessary to use high-quality engine oil and (PNF) fuel additives, which is also the key to realize the problem of not disassembling or repairing engine oil.