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· PassatWorld Elder
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As the engine cycles through its normal rotation and when the RPM's go up and down, there are pressure differences in the crankcase. That PCV valve helps control those fluctuations. With that being disabled you get full manifold vacuum and it sucks all that oil mist / vapor right into the combustion side of the engine which is why it smokes so badly.
 

· PassatWorld Elder
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8,373 Posts
Almost like an old school V8, when they used to run a 1/2" hose the back side of the carburetor mounting plate / adapter right up to one of the valve covers. The inside of the intake manifold would almost be plugged up with oily tar like gunk.
Old Ford FE motors had this problem.
And for you youngsters out there, one bank of cylinders would usually have more cubes than your whole engine.
 

· PassatWorld Elder
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8,373 Posts
I honestly can't answer that question right now.
But there are 3 hoses that connect to the "crankcase". The two hoses that connect to the valve covers (one on each side) and the third is underneath the intake manifold at the backside of the engine.
So depending on what hoses are or are not connected can change the way the car runs.
And I'll be honest, I can't remember the exact connections, but I think there are two connections to the intake or at least what would be considered intake manifold. There at least three revisions of this the PCV system on our cars.
 

· PassatWorld Elder
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8,373 Posts
I know this doesn't give any of the answers you are looking for, but if the car runs ok and it's not smoking, a few days shouldn't hurt anything until the replacement arrives.
 
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