10-07-04, 02:53 PM
I just put a rebuild carb I took off an older '77 coupe deville on my '79 coupe deville, It started up ok, but the idle was extremely high. The Idle screw isnt contacting the throttle linkage at all. I tried pushing it back by hand but that didn't work, it just stayed high. I thought it might not be warmed up so I took it for a spin. Still the idle remained high and it surged a little bit. I did drop the idle when I put it in gear, but not as much as it did with the old carb. Is there something I'm missing? All the wires are correct, the mixture seems fine; theres no black smoke and it doesnt seem lean. It actually runs great besides the high idle. Any suggestions? I was thinking about rebuilding the one I had on there and just keeping the new one on till I'm finished with the rebuild, but it would be nice just to fix the one on there now. There is a little difference in the numbers:17059530 on the original one and 17058530 for the one I got from the '77. Should the difference matter? Thanks for any suggestions!