How to replace the BMW 5 valve cover gasket?

The replacement of the valve cover gasket of BMW 5 needs about 500 yuan, and the replacement of this car is still relatively expensive: 1. First, the bonnet gasket is really fragile and aging, and the sealing ability is lost, resulting in oil leakage. This situation is actually good. Just open the bonnet and replace the gasket.

2. The second reason is that the PCV valve in the crankcase ventilation system is blocked, which leads to excessive pressure in the engine and eventually leads to oil leakage under pressure;

3. If this problem is not found out, it will cause more troubles in the future, such as oil leakage of crankshaft oil seal.

4. However, it is very simple to judge whether the PCV valve works normally: when idling, you can judge the working state of the PCV valve instantly by testing the vacuum degree of the crankcase air inlet with your fingers.

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