Engine won't run
Thread Starter
Racer
Joined: Jun 2002
Posts: 421
Likes: 0
From: Rockfield, Ky
Engine won't run
I took my plenum and intake runners along with my valve covers to have them powder coated and then reinstalled them. After waiting for a long time for the stuff to be done, I got them on Monday afternoon and started the car. It turned over and ran and then died. I did this several times with the same result. I did not change any settings and everything went back like the maintenance manual said. The engine will run as long as I pump the pedal but stops when I stop the pedal movement. I'm thinking air in the line but it may be something else. Any ideas. I haven't check the fuel pump but it sounds like its working.
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Go back over your install and make sure you got everything plugged back in.
The 'easy' visual stuff:
1) TPS
2) IAC
3) MAP
4) IAT
5) MAF
Then check all the vacumn items:
1) PCV Drivers Side Halfway back on the manifold
2) Power Brake Port Rear Of Plenum
3) Vacum Port At Rear Of Plenum For All the Reat of The Vacumn Items
4) Anything I forgot onthis list
Have a helper keep the engine running while you're listening/looking for a vacumn leak.
Then make sure the spark plug wires are routed correctly.
Start with #1 and verify all are routed to correct plug.
Make sure the base timing is set to 6* +/- 2*
Disconect the EST plug before settingthe timing.
That's enough to keep you busy for awhileand you'll probably come across the soultion while you aregoing back over the install.
Goodluck with it and keep the slick side up and the greasy side down.
The 'easy' visual stuff:
1) TPS
2) IAC
3) MAP
4) IAT
5) MAF
Then check all the vacumn items:
1) PCV Drivers Side Halfway back on the manifold
2) Power Brake Port Rear Of Plenum
3) Vacum Port At Rear Of Plenum For All the Reat of The Vacumn Items
4) Anything I forgot onthis list
Have a helper keep the engine running while you're listening/looking for a vacumn leak.
Then make sure the spark plug wires are routed correctly.
Start with #1 and verify all are routed to correct plug.
Make sure the base timing is set to 6* +/- 2*
Disconect the EST plug before settingthe timing.
That's enough to keep you busy for awhileand you'll probably come across the soultion while you aregoing back over the install.
Goodluck with it and keep the slick side up and the greasy side down.
Safety Car
Joined: May 1999
Posts: 3,651
Likes: 5
From: Atlantis
Cruise-In I Veteran
Hey Pete, I'm betting you are right...
about all of us leaving stuff disconnected. LOL !!!
I've left all the stuff I listed disconnected at one time or another.
It's actually amazing what you CAN leave loose and these things will still crank up and try to run.
Racer
Joined: Mar 2005
Posts: 379
Likes: 95
From: Ingersoll Ontario
Originally Posted by JetJock
I took my plenum and intake runners along with my valve covers to have them powder coated and then reinstalled them. After waiting for a long time for the stuff to be done, I got them on Monday afternoon and started the car. It turned over and ran and then died. I did this several times with the same result. I did not change any settings and everything went back like the maintenance manual said. The engine will run as long as I pump the pedal but stops when I stop the pedal movement. I'm thinking air in the line but it may be something else. Any ideas. I haven't check the fuel pump but it sounds like its working.
Le Mans Master
Joined: Dec 2002
Posts: 6,715
Likes: 2
From: Santa Teresa New Mexico
Originally Posted by VetNutJim
Go back over your install and make sure you got everything plugged back in.
The 'easy' visual stuff:
1) TPS
2) IAC
3) MAP
4) IAT
5) MAF
Then check all the vacumn items:
1) PCV Drivers Side Halfway back on the manifold
2) Power Brake Port Rear Of Plenum
3) Vacum Port At Rear Of Plenum For All the Reat of The Vacumn Items
4) Anything I forgot onthis list
Have a helper keep the engine running while you're listening/looking for a vacumn leak.
Then make sure the spark plug wires are routed correctly.
Start with #1 and verify all are routed to correct plug.
Make sure the base timing is set to 6* +/- 2*
Disconect the EST plug before settingthe timing.
That's enough to keep you busy for awhileand you'll probably come across the soultion while you aregoing back over the install.
Goodluck with it and keep the slick side up and the greasy side down.
The 'easy' visual stuff:
1) TPS
2) IAC
3) MAP
4) IAT
5) MAF
Then check all the vacumn items:
1) PCV Drivers Side Halfway back on the manifold
2) Power Brake Port Rear Of Plenum
3) Vacum Port At Rear Of Plenum For All the Reat of The Vacumn Items
4) Anything I forgot onthis list
Have a helper keep the engine running while you're listening/looking for a vacumn leak.
Then make sure the spark plug wires are routed correctly.
Start with #1 and verify all are routed to correct plug.
Make sure the base timing is set to 6* +/- 2*
Disconect the EST plug before settingthe timing.
That's enough to keep you busy for awhileand you'll probably come across the soultion while you aregoing back over the install.
Goodluck with it and keep the slick side up and the greasy side down.
2 IAC
3 MAP
4 IAT
5 MAF
6 IIABDFI
Race Director
Joined: Jul 2004
Posts: 11,108
Likes: 0
From: Behind The Redwood Curtain, The State of Jefferson
mine does that when I screw with stuff, last time I just kept my foot on the pedal with the rpms at about 600 until it warmed up to about 200 degrees and then slowly eased off and now it's perfect.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski