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Mod | | | Forums66 Topics128,081 Posts1,056,318 Members48,442 | | 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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| | | | Joined: Jun 2010 Posts: 32 New Guy | | New Guy Joined: Jun 2010 Posts: 32 | I've got a '51 with a 216 Rochester carburator that I just got rebuilt. It runs like a champ, but the screw is loosening as I drive. Any suggestions? | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Are you talking about the Idle screw not the mixture screw?
If it is the idle screw, take the screw out and bend the two flat parts the screw pushes between closer together slightly, to put more drag on the screw.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Jun 2010 Posts: 32 New Guy | | New Guy Joined: Jun 2010 Posts: 32 | It's the one on the back of the carburator that faces out towards the front driver's side fender. | | | | | Joined: Jun 2010 Posts: 32 New Guy | | New Guy Joined: Jun 2010 Posts: 32 | Just looked in my shop manual. It's the idle screw. Thanks! | | |
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