06-30-2021, 02:54 PM
Hey Jerry first time caller long time listener love your programs haha.
I have a assortment of rigs 20 or so 1998 and older.
1989 8V automatic gold ecu
Motors 1989 with the integrated throttle body IAC no waterline. The motor was removed and reinstalled
I started it up ran huge rpms 3500 and pushed for 4000rpm with cut outs occuring.
Stopped it whenever it started hunting due to it being way above average for a kick.
Seemed like it was runaway lean.
Assuming vaccum leaks
Got a party smoke machine fogged intake WOT found a seeping pcv valve.
Nipple had broken off gross leak at the intake.
Replaced pcv same scream.
Duct taped the air snorkel closed 0 oxygen basically purrs like a kitten 1500rpm.
Must be breathing somewhere.
Tried using a propane torch unlit around the engine bay with no rpm changes
All cables are slack with butterfly closed.
Hard lined the dash pot to the intake to cause it to release full time 500 rpm shaved
Could the isc be pulling that kind of air?
Any tips or tricks to isolate this vac leak.
Really appreciate any and all advice to make this purr like a kitten.
I got tons of parts to swap in if required but id rather invest time confirming good parts technician style vs wasting time changing bits and never knowing if their viable in another rig.
Thanks for your wealth of knowledge and website.
I have a assortment of rigs 20 or so 1998 and older.
1989 8V automatic gold ecu
Motors 1989 with the integrated throttle body IAC no waterline. The motor was removed and reinstalled
I started it up ran huge rpms 3500 and pushed for 4000rpm with cut outs occuring.
Stopped it whenever it started hunting due to it being way above average for a kick.
Seemed like it was runaway lean.
Assuming vaccum leaks
Got a party smoke machine fogged intake WOT found a seeping pcv valve.
Nipple had broken off gross leak at the intake.
Replaced pcv same scream.
Duct taped the air snorkel closed 0 oxygen basically purrs like a kitten 1500rpm.
Must be breathing somewhere.
Tried using a propane torch unlit around the engine bay with no rpm changes
All cables are slack with butterfly closed.
Hard lined the dash pot to the intake to cause it to release full time 500 rpm shaved
Could the isc be pulling that kind of air?
Any tips or tricks to isolate this vac leak.
Really appreciate any and all advice to make this purr like a kitten.
I got tons of parts to swap in if required but id rather invest time confirming good parts technician style vs wasting time changing bits and never knowing if their viable in another rig.
Thanks for your wealth of knowledge and website.