Ldorris

I have pooled oil in the intake manifold, and blue smoke is coming from exhaust as excess oil burns. I'm pretty certain this is related to PCV issues (I understand bad rings are also possible). I have pulled the cover off the right cylinder head and cleared what was some severe blockage in the venturi for PCV. Issue got better after this was cleared, but it is not cured. Some notes...
1) Car sat for years and was obviously neglected
2) I replaced intake manifold gaskets, though I do question how well they sealed.
3) I have corrected several vacuum leaks, but I know there is still at least one more. Could cracked PCV hoses not allow proper ventilation, cause increased crankcase pressure, and force oil into intake? Or excess vacuum drawing oil into the intake manifold?
Are there any other ventilation components that I should check?

kraut56

The 2000-2002 M137 engine connects the venturi in the right valve cover front to the oil cooler. (it is supposed to at idle suck vapors from the crank case thru this portion of the oil cooler - nothing to do with oil cooling - to the intake. At high engine speed this is bypassed). If this was not working right, the intake manifold may be loaded with oil.
Make sure your oil cooler has not failed due to this engine crankcase ventilation causing overheating it .
Been there, done that!

Ldorris

Can one run a catch can and eliminate the PCV system? Not ideal, but as a last ditch effort before junking the car?