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04-03-2003, 02:28 PM
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#1 |
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Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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idle getting faster
OK, I've had the GMC almost 3 months now, and I've noticed that the idle keeps going up. When I got the truck, it was around 700 rpm. then it went to about 1 grand. now its at 1100 or so. What's going on? I dunno much about Q-jets, or any carburetor for that matter. Any help appreciated
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1969 GMC K2500  1996 Honda Accord 2007 Kawasaki KLR 650 |
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04-03-2003, 02:44 PM
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#2 |
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Registered User
Join Date: Oct 2002
Location: Parksville, B.C. Canada
Posts: 637
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Could be sticky gummed up linkages or your return spring just needs replacing. Spray on some carb cleaner to free up any linkages. Return springs are easy to find and fix, but don't put a really heavy spring on there, too much tension will wear the heck out of the throttle shaft bushings, (if they are'nt worn already). Your carb is just probably dirty, you did'nt say if the carb was rebuilt at any time but I'm assuming it's probably not been. Anyway, try the simple things first, I always say. Hope this helps.
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1969 G.M.C 3/4 Ton 920 (Canadian Version) 307 3 speed, currently apart 1998 Chevy 1/2 ton ex cab V-6 5 speed 1967 Chevy SWB - project truck; not started just yet Last edited by lpaine; 04-03-2003 at 03:01 PM. |
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04-03-2003, 05:59 PM
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#3 |
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Registered User
Join Date: Mar 2002
Location: Floodwood Minnesota
Posts: 1,057
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vacuum
Could also be a vacuum leak getting worse. Love those quadrajets...
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1967 K30 Napco 292/SM420 original paint 30k miles 1968 K60 Napco 396/5spd. dbl frame 52" michelins 1969 K10 SWB GMC 454/4spd 6" 35's posi,hooks 1972 C30 longhorn,BB/AT,A/C,Tilt,Toolbox,lokr 1987 K20 Chevrolet Suburban. 6" lift. 5.7L/TH400 1979 K60 GMC Coleman 4x4, 427/Allison. |
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