oil in back of intake

[turbo buicks]

if oil collects on the back floor of my lower manifold, right under the coil pack, is it safe to assume my plenum gasket is leaking oil? what about the PCV valve?

[HairDrier]

Mine gets oily back there too, but it doesnt puddle. Check that the PCV is not plugged. It could also be getting by the rubber grommet. Unfortunately its hard to get in there with everything assembled. The PCV hose could also be split somewhere