A little help please, misfires.

[Ricky Bobby]

Originally Posted by Rookie48

At this point I'm somewhat convinced there is a small vacuum leak at high vacuum conditions with the throttle just off of closed. But finding it is a buggar!

-If the VCG and 15 grommets were replaced
-The lower intake elbow is good (check the elbow for cracks and the 2 vaccuum hoses and replace those as well)
-Throttle body is clean and gasket is good
-ICV is clean and mounted securely
-CCV is replace with good parts and hoses are secure on the CCV, and dipstick guide tube is clean/clear for the CCV drain
-vaccuum hose from the EVAP canister is good (there is a vaccuum tube at the back of the intake manifold
-If fuel filter was replaced, the small vaccuum hose is not broken
-Coilpacks and plugs are verified to be good
-Battery is in good condition (needs enough voltage to fire the coils)

I'm pretty much out of low throttle high vaccuum misfire solutions lol

Good luck to you guys