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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: Jul 2011 Posts: 16 New Guy | | New Guy Joined: Jul 2011 Posts: 16 | Earlier today my truck stalled, I discovered that there was no gas getting to the carb. Took apart the fuel pump and found that one of the check valve diaphragms was unseated. Put it back together and it ran. Took off again and now and hour later I'm on the side of the road. Took it apart again, check valve is in place, put it back together and nothin. Any ideas? I'm stuck here with nothin but a screwdriver! (235 engine, 61 C10) | | | | | Joined: Nov 2006 Posts: 2,544 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 2,544 | Do you have fuel coming into the fuel pump? You might have stuff coming from the tank causing problems. If you have fuel coming into the pump and its not pumping that is the problem. If you take the pump off and work the arm in and out you should be able to see if its working. Has the truck been driven regularly or has it been sitting? | | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | I had an almost new pump and the diaphragm went bad after a couple years. i think because of the ethanol in fuel. i put an electric pump on as a back up.
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Jul 2011 Posts: 16 New Guy | | New Guy Joined: Jul 2011 Posts: 16 | Thanks guys, yeah the truck was sitting for 8 years until a month ago. When I got the fuel pump apart again I saw some small debris inside. I think it was causing the check valves not to seat. Gas comes in but it didnt pump out. I got it to start up and run home. When I got the truck a month ago I pumped the old gas out of the tank, but I didnt take the tank out and drain it and clean it properly. I ned to do that and install an inline fuel filter. | | |
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