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Power Strokes
94-97 Aftermarket
Super Duty fuel pump / selector valve troubleshooting
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[QUOTE="cbuttre835, post: 1516689, member: 1190"] Ok. Im running a "baby fuel" system; a Super Duty pump after the factory selector valve, feeding into a spin-on filter. The truck died the other day. I had swapped tanks, the gauge moved, but it died at enough miles for the tank I was on to be empty. Checked the fuel pressure gauge under the hood, it was stuck. Got home and when I removed the gauge to put on a new one, the system had trapped air. Fuel pump is only delivering air. It is running. Selector valve does nothing, and now the gauge wont move either. #6 fuse (it, and tge a/c comp clutch) is good. Also, when I swapped tanks initially, the level went wayyyyy past full. Kind of weird. Questions: If I have good flow thru the selector valve, should I be able to start a siphon or use a suction pump to get fuel out and onto the ground (lower point for siphoning)? If this SD pump is good, should I be able to put the pickup tube into a bucket of fuel and it pump some? Or does it need to be "primed"? If I ditch the selector valve - Can the stock OBS tanks be sumped easily, like with a Bean's Diesel Sump? Can a plastic 38 gallon Bronco tank be sumped? (asking these 2 questions because the sump needs about 4"x4" Ive read.) [/QUOTE]
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94-97 Aftermarket
Super Duty fuel pump / selector valve troubleshooting
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