I can hear it. Plus acceleration is slow and the EGR keeps going off. I have replaced the EGR with a junkyard one and it didn't fix the problem so I want to fix the vacuum leak before I spend money on a new EGR.
I cleaned the whole area when I put the new gaskets on. But I don't think the lower intake lined up perfectly. I mean, all four bolt holes lined up but it still appeared off and like the gasket might not be perfectly seated in the groove on the head. Maybe I could get it to fit better if I messed with it but I figured that must be as good as it gets.
Anyways I tightened with 3 rounds of 3,2,4,1 but I just went to pretty tight on my 1/4" drive socket wrench.
It's still sucking air. Maybe it's just a line somewhere. Maybe I am mistaking air swooshing around by the serpentine belt as a vacuum leak. But I think the intake is leaking somewhere. Propane around the intake doesn't change the engine. Not brave enough to spray brake cleaner down there.
Should I try the intake one more time? Try the EGR? Give up and take it to a pro?