how much Vaccuum should I have at Idle with an ms3 cam. I had an NX backfire...can't find anything wrong with the intake from the outside...sprayed carb cleaner all over it no idle change...
Car will only idle sometimes and when it does it has about 7-9in/hg @ 900-1000rpms ...when I rev it to about 2K it fluctuates around 13-15in/hg.

I'm going to be doing a leakdown test, but before I do it just wondering what you guys think

 

Paul said this car always had an idle problem. Are you saying it just started after your backfire? I know when he brought it down and I listened to it, it wouldn't idle for ****.

 

no like does not idle like it doesnt have the ability.