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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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| | | Forums66 Topics128,007 Posts1,055,281 Members48,418 | | 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: Aug 2003 Posts: 19 'Bolter | | 'Bolter Joined: Aug 2003 Posts: 19 | I have a 37 chevy with a 216. Runs great but if it sits a few days the gas drains out of the glass bowl filter attached to the carb. What would cause the suction to happen and how can I stop it.
Thanks
Steve
1937 Chevy 1/2-Ton Pickup x31940 Chevy 1/2-Ton Pickup1940 Chevy 1 1/2-Ton COE1941 Chevy 1/2-Ton Pickup1941 Chevy 1 1/2-Ton COE1941 Chevy 1/2-Ton Suburban1946 Chevy 1 1/2-Ton COE1971 Chevy 1/2-Ton PickupIn the Stovebolt Gallery | | | | | Joined: Dec 2010 Posts: 291 Shop Shark | | Shop Shark Joined: Dec 2010 Posts: 291 | My old fuel line between the tank and pump had a hair line crack in it and was causing the same issue. When i put pressure to it I found the drip. I installed new fuel line. | | | | | Joined: Apr 2005 Posts: 381 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 381 | The fuel pump diaphragm isn't holding the pressure probably due to age or deterioration due to ethanol in today's gas. Hence it's allowing the fuel to drain back. Try rebuilding the fuel pump with ethanol resistant seals etc. | | |
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