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Mod | | | Forums66 Topics128,169 Posts1,057,037 Members48,458 | | 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: Dec 2006 Posts: 1,154 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,154 | Hi.....I understand that a lean condition will cause pops on a downhill on compression. So I turned the screw at the base of my Rodchester B out about 1/2 turn from where it was set and it helped...but.....how much is enough. I'm afraid of losing the spring and needle. I have the engine tuned by the vacuum method and the needle is steady at 19 at 2800 foot elevation and about 650 rpm idle. She runs a treat but when on compression down a hill I get those small rumble farts which my wife hates. Thanks in advance for your help to us.
Steve
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