What should I do if the valve cover gasket leaks after replacement？

What should I do if the valve cover gasket leaks after replacement?

The reason for oil leakage after replacing the valve cover gasket is that the crankcase forced ventilation valve has been blocked, resulting in the increase of crankcase pressure, pressure relief from the valve cover gasket or other weak places, resulting in oil leakage, aging of the valve cover gasket, resulting in poor sealing; If the crankcase ventilation valve is blocked, or the gap between the piston ring and the cylinder wall is too large, resulting in excessive blowby and high crankcase pressure, gas will leak out at the weak seal.

The best way to solve the oil leakage of the valve cover gasket is to replace it with a new valve cover gasket, or even replace it with the valve cover seriously. The reasons for oil leakage from the valve cover gasket are as follows:

1. Valve cover gasket is a kind of rubber parts, which may age, harden or even break after being used for a long time. When the valve cover gasket hardens or breaks, it will lead to oil leakage.

2. The valve chamber and crankcase can flow through the PCV crankcase ventilation system, so that the fuel that is not fully burned can re-enter the cylinder for combustion through the system. If the valve of the crankcase ventilation system is blocked, the pressure in the valve chamber will increase, which will make the valve chamber cover pad be oppressed and leak over time.

The effects of oil leakage from the valve cover gasket are as follows:

1. Smell in the engine compartment; The oil leaking from the valve cover gasket drips the oil onto the exhaust pipe, and the oil at high temperature will generate a bad smell.

2, smoking in the engine compartment; The valve cover gasket is seriously leaking oil. When more engine oil drops on the exhaust pipe, it tends to be ignited, and a lot of white smoke will be emitted at this time.

3, the cylinder pressure decreases and the power becomes weak; When the valve cover gasket leaks oil, its air tightness will become worse, and the pressure in the cylinder will be lost, resulting in heat loss and eventually weak power.

4. Produce sludge on the camshaft; The valve cover gasket leaks oil not only outward but also inward. The consequence of leaking oil into the valve chamber is that engine oil is accumulated on the camshaft and turned into sludge, which will form carbon deposits over time.

5. The amount of engine oil decreases rapidly; As the name implies, the oil leakage of valve cover gasket will consume oil, so the oil consumption will be much more than the normal damage.