I developed a rather serious oil leak from my intake manifold. I put the car away for the winter and finally got to work on it the past week. Used RTV and did not use the end gaskets. Let the RTV cure for 24 hours, started her up....and now the leak is worse. I've been searching around for an answer. So far, it can either be coming from the oil pressure sensor and a bad pcv valve other than the intake manifold. The leaking is more prominent in the back of the manifold. I'm starting to think my Weiand intake is warped and not setting correctly. I'm also thinking it could be the rear main seal. It's just getting so frustrating as I planned to start driving it this weekend. There's so many causes for all this...it can even be high crankcase pressure blowing out the gaskets. I don't even know where to being. I have very limited tools between me and my friend Rich who is helping me on this and I'm about to throw in the towel and take it to a pro, and I'd be upset if it was something small. If this is the case, here comes the other fun part trying to find someone who can still work their way around something carburated. Any idea how to tackle this? Anyone dealt with this before? Again, I don't even know where to begin.

The car is an 84 Firebird, LG4 305, edelbrock 600cfm carb, weiand intake manifold.

 

Replace the oil pressure sending unit, then take it to the quarter car wash and clean it up and see if it's fixed.