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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 2002 Posts: 62 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2002 Posts: 62 | I’ve taken the Rochester “C” carburetor off of the intake manifold on my ’54 235 CID Stovebolt engine. I’m not sure if there’s something wrong with it or not, but I don’t want to have to take it apart and rebuild it if I don’t have to.
If you lift the throttle lever and open the throttle up to about 3/4 and then release it a spring in the carburetor snaps the throttle shut. If you open it all of the way it seems to catch and stay open. When you apply even the slightest amount of pressure the throttle closes completely.
Is this normal behavior or should the throttle always close on it’s own no matter how far it’s opened? Is it just the spring hooked to the accelerator linkage rod and engine block that closes the throttle or should it close even when this spring is not connected? | | | | | Joined: Feb 2000 Posts: 5,193 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,193 | The spring on the linkage is what pulls it closed. What you feel is the accelerator pump springs inside the carburator. You must have a linkage return spring for everything to work correctly and safely. Joe | | |
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