Join Date: Aug 1998
Location: Waldorf Md. USA
Soop, (name ???)
I have seen several 3.4's with that problem and every one turned out to be leaking intake manifold gaskets. I would suggest that he take the intake back off and replace the gaskets, using GM gaskets and the factory torque specs and pattern. There is also a vacuum hose that runs under the manifold on some cars, it could be loose and causing a vacuum leak.
Hope this helps,
Advanced Automotive Machine
1971 Chevelle "Heavy Chevy" original owner
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.