304 base adapter vacuum leak???
shanespurlock
Jeeper
So after rebuilding the AMC 304 in my 73 CJ5 , i have run into a vacuum leak issue. When the engine is cold, it runs fine, no vacuum leaks, even when I use starting fluid to test for leaks, all is good. Once the engine is warm it falls on its face and dies. If I keep it running by hand and spray starting fluid anywhere near the front of the carb base, drivers side, or rear it increases rpm, obviously getting a vacuum leak when engine is warm. I resealed everything with new gaskets and still the same problem. I pulled the spacer with the two vacuum ports thats between the carb and intake, and it looks okay, but it looks like there may be some tiny stress cracks around two of the holes for mounting the plate the intake. Only thing I can think is that when torqued down and fully warmed up, the cracks open up and create leaks. Either that or the cracks really are superficial and theres some warping that gets worse when warm.
Anyone have any experience with anything like this? Anyone know where to find a new spacer? I can't find one anywhere online.
Im about to rip my hair out over this.
Anyone have any experience with anything like this? Anyone know where to find a new spacer? I can't find one anywhere online.
Im about to rip my hair out over this.