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Mod | | | Forums66 Topics128,108 Posts1,056,238 Members48,437 | | 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!
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| | | | Joined: Jun 2004 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2004 Posts: 103 | Hey - This is a real puzzle. I put a new fuel pump on 6 months ago. This is a Canadian repop with the glass bowl on top / brass mesh filter.
It is much stonger than the old pump and I had a hard time getting the old fittings tight enough to stop fuel leaks. When the engine is running, there are no leaks - but when I shut down the engine, fuel leaks from the new pump. All clamps are tight and the glass bowl is finger tight. I have a vented gas cap. I seem to have a pressure leak at shut down - not much, but enought to smell up the garage. Any suggestions?
BW | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | After shutdown pull the gas cap to tell if any pressure has built up in the tack. If there is drill a small hole in the gas cap.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Jun 2004 Posts: 103 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2004 Posts: 103 | Follow up - Maybe "finger tight" is not tight enough? No pressure on the cap, but the fuel pump seeps fuel around the rubber gasket. Glass bowl is plenty thick - how tight is OK? Heat from the engine will affect the seal. Thanks, BW | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Take it off & wipe all contact surfaces. Make shure the seal is centered in the houseing. Finger tight should be enough but you might put that extra twist on it. Be shure treads are not bottoming out before the pressure is on the bowl.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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