New problem just cropped up for me with my 90 Vanagon.  I seem to
have a significant loss of power both when engine is cold and warmed
up.  Recent maintenace included replacing the ground strap from block
to ignition coil, cleaning up contacts on the ignition coil, new
rotor, distributor cap, new spark plugs and wires, new air filter,
recent oil change.  Checked throttle position switch and this is ok.
Idle stabilizer is working.  I then checked for vacuum leaks and
replaced vacuum line from fuel pressure regulator to intake manifold
because this line looked suspicious although I think it was ok.  Next
I pressurized the intake system with air found a leak coming out of
the oil breather pipe.  This is the large black plastic pipe that
sits on top on the engine with a line that goes from it to the air
intake hose just after the AFM.  This black breather pipe is not
supposed to be vented in anyway to the atmosphere---Correct?  Because
of this I suspect I have an air leak into the intake system after the
AFM (false air) which may be leaning the air/fuel mix.  Has anyone
had problems with this pipe?  Mine seem to be leaking near the top
ridge just under what looks like a cap on this pipe but it is not
removable from what i can tell.  Any suggestions appreciated.

TIA

Tim
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