carb. rebuild help
Thread Starter
Cruising
Joined: Apr 2010
Posts: 11
Likes: 0
From: Clarksville Tennessee
carb. rebuild help
I recently rebuilt my Quadrajet on my automatic 78 vette. When I rapidly accelerate from a stop, it lags before it shifts to second or starts jumping up and down between gears. It performs fine everywhere else, idles well, shifts from second to third fine, no problems when I get on it when it is already in second or third, if I slowly accelerate it has no problems anywhere. Any advice would be appreciated.
Tech Contributor
Joined: Aug 1999
Posts: 14,366
Likes: 6,348
From: At my Bar drinking and wrenching in Lafayette Colorado
Try adjusting your 2-1 kickdown cable on the carb: Pop the plastic adjustment tab up, put the carb at WOT, and then push the tab back down. Verify your tranny modulator hose is hooked up and undamaged.
Lars
Lars
Thread Starter
Cruising
Joined: Apr 2010
Posts: 11
Likes: 0
From: Clarksville Tennessee
Thanks for the advice Lars, I messed around with that carb for hours looking at my pre-work pictures to make sure all the hoses were in the right place, replacing damaged ones, finally got it working and it runs smooth. I am a rookie when it comes to working on cars but I like to do the work myself, I have now successfully rebuilt my first q-jet, which is a miracle.
