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Click on image for the lowdown. 
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| | | Forums66 Topics128,026 Posts1,055,409 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: Dec 2003 Posts: 1,061 'Bolter | | 'Bolter Joined: Dec 2003 Posts: 1,061 | Also check for a worn throttle shaft. If the idle mixture screw does not produce changes in RPM when turned both in and out, you have a vacuum leak. With the engine running, try and move the thottle shaft, wiggle it it up and down and listen for a variation in RPM and look for gas seeping out along the shaft and running down the base. I have this problem with a couple YFs I am dealing with right now. I have one with a machinist who is attempting to make me some new bushings and polish the shaft.
1946 1-ton Panel 1952 1-ton Comml. W/Grain Body | | |
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