How often does the valve oil seal change?

Valve oil seal is one of the important parts of engine valve group, and the valve is generally made of fluororubber. Rubber parts will lose plasticizer with the passage of time under the influence of alternating working temperature changes. The damage of automobile valve oil seal will cause the automobile to start burning oil, and blue smoke will appear every cold start, and the engine will start to appear faults such as insufficient acceleration and vibration. At this time, the valve oil seal needs to be replaced, but there is no specific replacement mileage.

If there is oil burning, it must be replaced.

If the valve oil seal is damaged and causes oil burning, it will also have obvious characteristics.

Blue smoke is one of the oil burning phenomena, which is mainly caused by the wear of piston, piston ring, cylinder liner, valve oil seal and valve guide, but the oil burning phenomenon caused by exhaust pipe should be eliminated first.

To judge whether the valve oil seal leaks oil, we can use the method of refueling the valve and releasing the throttle. The blue smoke from the exhaust pipe of the filling valve is caused by the excessive wear clearance of the piston, piston ring and cylinder liner. The blue smoke from the exhaust pipe of the throttle valve is the damage of the valve oil seal and the wear of the valve guide.

The oil leakage from the valve oil seal will burn out the engine oil that seeps into the combustion chamber due to the lax sealing of the valve oil seal, and there will be blue smoke in the exhaust. If the duration is too long, the valve is easy to produce carbon deposit, which leads to lax valve closing and insufficient combustion. At the same time, it will also cause carbon deposition or three-way catalytic blockage in the combustion chamber and injector; Engine power decreases, fuel consumption increases obviously, and related parts are damaged, especially the working condition of spark plug decreases obviously.

& ampemsp & ampEmsp To sum up, the valve oil seal is seriously damaged, so it is necessary to replace the valve oil seal in time according to the vehicle condition.

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