I just found a way to check for the gasket falure for the intake manifold
that has been discussed. Its from the Mopar, Magnum Engines book:
".......To determine if there is a proper seal, remove the PCV valve from
the right hand valve cover, but leave the PCV valve attached to the hose
from the intake manifold. Remove the breather hose from the left-hand valve
cover that goes to the air cleaner. With the engine idling, place your
thumb over the opening where the PCV valve was located. After 10-15 seconds
you should feel pressure, which indicates that the gasket is sealing. If
you feel a vacuum, the gasket is leaking and needs to be repaired......"
Chris
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