I've been getting oil all over my under carriage and so I'm beginning to suspect that I have the intake manifold leak. I've looked around for the source and it seems to be coming from the rear left (as you are looking at it/ or passenger side) of the engine. Does this sound like the culprit, or should I check for something else before I start tearing it down? Thanks for the help.

 

put your hand as far back down behind the top rear of the engine and start feeling around... if your hand gets oiled then you got the manifold leak.