The BMW Engine Adventure

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The engine with the intake removed

 

 

This is the reason for removing the intake, the tube has an 'o' ring inside that cannot be changed with the intake manifold on the engine. You might be able to able to remove the throttle body, but that too is pretty difficult with the intake on the engine as well. Easier to just remove the intake manifold, besides, this way I was able to clean all the oil out if it.

 

 

The Throttle body removed and cleaned

 

 

The intake manifold removed from the engine

 

 

Note the brass inserts in the plastic housing

 

 

The failed crank case vent valve, there is a diaphragm inside this that  fails. When this happens, the engine will run very roughly due to a lean condition caused by outside air drawn in through the engine seals as a result of excessive vacuum. This will be accompanied by scary amounts of whitish/blue smoke.

 

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