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Mod | | | Forums66 Topics128,036 Posts1,055,458 Members48,422 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jul 2004 Posts: 19 Apprentice | | Apprentice Joined: Jul 2004 Posts: 19 | I have a 72 K20 with a 350, q jet carb. The truck cold starts fine but the choke will open all the way as soon as it starts, making warmup a little difficult. Is the tension on the bi-metallic spring on the intake supposed to override the vaccume cylendar to give me half choke and high idle during warmup? The spirng is not broken but seems week.
1971 GMC 5500(gone but will never forget), 1972 K20 with plow
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