What should be leaked is always leaked. I bought a real BMW-70,000-kilometer 535i replacement valve cushion_Maintainance, Maintainance

What should be leaked is always leaked. I bought a real BMW-70,000-kilometer 535i replacement valve cushion

BrunoClarissa

August 3, 2024

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I have been making BMW parts myself for many years, and I hurriedly contacted the 4S shop master I worked with to make an appointment to start work.

Imported standard axis 535i in 14 years, Imperial Blue, coordinates Nanjing.

I used to naively think that imported engines should leak oil later. As a result, after 60,000 yuan, what should leak will always leak. Previously, it was the oil radiator that leaked. It was really weird to say, but after 60,000 yuan, it leaked, so I had to replace the radiator mat.
Recently, when driving, the burnt smell of engine oil suddenly came into the cockpit. I knew that the valve cover must have leaked oil. When I opened the plastic cover, I opened the plastic cover, and sure enough, the lower right corner began to leak oil…

I have been making BMW parts myself for many years, and I hurriedly contacted the 4S shop master I worked with to make an appointment to start work.

The ignition coil is removed and the spark plug can be seen

The fuel injection pipe needs to be removed

Remove the fuel injection pipe

The valve cover is open and the engine is clean

This is due to the fact that we usually use original 0w-30 engine oil for maintenance, and there is no sludge at all

The pattern on the cam, is it like the pattern on a Damascus steel knife?

It’s inevitable that there will be a little dust when the cover is removed

There is no sludge at all

Perfect pattern

Finally, there are a few photos of the chief culprit who was removed, rubber pads. Japanese engines will not leak oil, because Japanese cars are generally coated with glue, and German cars are generally rubber pads. Rubber will age. No wonder it will leak when it reaches a certain number of kilometers.