Snapped a few pics of the back of my lt1.

Can't tell if the leak is coming from the pressure sending unit or the manifold seal cause it's such a mess...Had a "buddy" telling me the manifold seal would only create a small drip because there's no pressure behind it, while the PSU would cause a misting or a spray when they leak... What you guys thinking?





After some brake clean and engine running........where is the source?!

 

That third picture looks pretty convincing of the intake manifold leak, IMO.

What I would do is do the intake manifold gasket, and while it's off, reseal the OPSU. Might as well.

 

eesh i was hoping you wouldnt say that. haha

I still cant figure how the oil would get on the PSU if the manifold seal is bad. this would mean the oil is leaking upward :/ Maybe just wishful thinking....

Also my oil pressure guage used to be nice and smooth as the RPMs climbed up. Now it seems to be notichy and twitchy when i give it some throttle it spazzes all over the place. Is this a sign of a bad sensor or a clogged galley leading to the sensor?

 

Not always, you can get a "seep" from the PSU. You could clean (spray with degreaser) this area, and then check it while it's running. Might give you a better idea of what's leaking.

 

The last 2 pics are after a little brake cleaner with the engine running. I can't see anything back there unless i stick the camera back and snap some pictures. Any advise to spot a leak short of mirrors and a flashlight??