carb problem? not sure
Thread Starter
Intermediate
Joined: Nov 2002
Posts: 34
Likes: 0
From: Tampa Fl
carb problem? not sure
I have been having problems with stalling with my 78 vette. It only occurs when my car accelerates from idiling. When pushing down on the gas pedal i feel and hear the car about to die, so i let up on the pedal and push down again causing the engine to rev up and regain power. Does anybody have any ideas what the problem might be?
Drifting
Joined: Apr 2002
Posts: 1,716
Likes: 4
From: New Baden Illinois
Re: carb problem? not sure (78 corvette)
One possibility is the accelerator pump in the carb. You can purchase a rebuild kit for the Quadrajets pretty cheap and they are fairly easy to rebuild. Nearly all kits come with the accelerator pump.
Safety Car
Joined: Jul 2002
Posts: 4,269
Likes: 3
From: St. Charles IL
Cruise-In 5-6-7-8-9-11-12 Veteran
A CI-6 Car Show Winner
Re: carb problem? not sure (78 corvette)
Sounds like a off-idle stumble to me? Probably it's a tired accelerator pump or improperly adjusted idle jets. Check out Lar's paper on Q-jets on this thread: http://forums.corvetteforum.com/zerothread?id=431354
There are also some articles on Q-jet rebuilding in the http://www.corvettefaq.com web site, some also written by Lars. :cheers:
There are also some articles on Q-jet rebuilding in the http://www.corvettefaq.com web site, some also written by Lars. :cheers:
Burning Brakes
Joined: Oct 2001
Posts: 1,241
Likes: 4
From: Okinawa Okinawa
Re: carb problem? not sure (78 corvette)
Take a look at lars thread. He goes through just about everything on the carb.
What kind of carb do you have? I had a Holley 750 DP on mine. After trying everything, I switched to a smaller carb and it ran great.
What kind of carb do you have? I had a Holley 750 DP on mine. After trying everything, I switched to a smaller carb and it ran great.
