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Registered User
Join Date: Sep 2009
Location: Beaverton, OR from WA State
Posts: 1,515
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Quadrajet choke not opening
Back to the forums, need some help. Past couple days my truck has been failing to come down from high idle. Cold, hop in, set choke (depress accelerator), fires right up. Let it run while I scrape windows and drive off. After several minutes of driving it is still on high idle, now that it is warm it's even higher. My high idle screw is set to about 1,200 cold, after warm it runs between 1,500-1,800. I can pop the hood, lift air cleaner, and flick the choke linkage open and it stays open until I move the accelerator. Moving the accelerator triggers the choke linkage and it closes again and raises the idle.
Carb rebuilt a year ago, all linkage is clean and moves freely...but something is sticking somewhere. Side note: seriously getting tired of working on my truck lately. We haven't had any "what did you get done..." threads lately but:
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Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96 |
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