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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!
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| | | | Joined: Sep 2020 Posts: 22 'Bolter | | 'Bolter Joined: Sep 2020 Posts: 22 | Hey guys,
I just rebuilt the zenith 228 with electric choke on my 1953 gmc. Now it starts and idles great but boggs on fast acceleration and even back fires. I was thinking accelerator pump but it's all new and looks/works as it should. I did notice that a quick pump on the pedal and the choke slams shut, if I hold the choke open and rev it, no issues. Any ideas on why it's doing that? | | | | | Joined: Dec 2005 Posts: 547 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 547 | Sounds like a piece was reinstalled backwards or incorrectly if the choke slams shut with the pedal pushed. It should open with the pedal. I'm not familiar with the Zenith carbs. Go back over your assembly and check it with your diagrams that came with your rebuild kit.
58' 3200 235 3-speed/OD
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