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Mod | | | Forums66 Topics128,035 Posts1,055,446 Members48,422 | | 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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For helping keep this great
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| | | | Joined: Sep 2010 Posts: 122 Shop Shark | | Shop Shark Joined: Sep 2010 Posts: 122 | Installed a new fuel pump on my recently rebuilt 261 and after starting the engine noticed that gas was streaming out of the small vent hole on the bottom half of the pump body. The engine ran for about 1 minute before I caught the leak and shut it down. Aside from getting a new pump Im really concerned about gas getting into the oil thru the pump body somehow?? The oil does NOT show signs of contamination such as an increase in oil level or a gas smell in the oil. Can gas get into the oil thru the pump?? | | | | | Joined: May 2001 Posts: 7,438 Extreme Gabster | | Extreme Gabster Joined: May 2001 Posts: 7,438 | Yes it can. I doubt if enough would get into it in one minute to make a difference though. | | | | | Joined: May 2005 Posts: 119 Shop Shark | | Shop Shark Joined: May 2005 Posts: 119 | Yeah, that was happening on our old big air compressor, and I was wondering why the oil was getting so high on the dip stick, definitely gas got in the oil. New fuel pump and I changed oil.
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