[Vwdiesel] oil in intake

[mikitka]

On my 91 Jetta TD is there a way to check the crank case control valve on
top of the valve cover? It seems to be letting a little more than I would
like of oil to be sucked out of the valve area and into the intake. Now
remember, I'm the one with 0 oil pressure at operating temp when taken at
the head sending port. I can tell you that the head is getting plenty of
oil. I also have the splash shield under the valve cover. I just noticed
when my boost line came off my intake right before it went into the head
that it was spitting out some oil. The Bentley really doesn't say much. Do
these valves go bad? Would it be possible to put an orifice inline to
control the amount of vacuum it pulls off the valve area? I think this is
part of my oil consumption and it can't be good for the turbo.  Thanks