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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

Dual tank problems

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Old Jun 24, 2021 | 05:55 PM
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nc73
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Dual tank problems

Ok so I got me a stroker that sounds like a diesel and to make things worse the tanks are acting funny. One day the rear works one day the front stops working. When I took the fuel line off I can't see fuel gushing out when the key is on but I do hear the pump run. In all cases I hear the pump run. The front has a 255lph treperformance pump, installed without the pump module. It was advertised as compatible with my 96 f150 but apparently you have to do some fab work to make it work. To my knowledge it does have a built in one way valve. It all started when I installed the front high flow pump. Right now the rear works and if i switch to the front it dies. Earlier the front worked. What the hell is going on? Would it solve everything if I just ran one and disable the other?
 
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Old Jun 24, 2021 | 06:08 PM
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nc73
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Sorry I just realized what my issue might be for the front tank. Doesn't the return line have to be submerged? I do not have it submerged and I hear that could cause bubbles, etc.
 
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Old Jun 24, 2021 | 07:07 PM
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nc73
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So the last few times the pump was functional, well this time the front seems to be dead. Will take it out and redo wiring and test.
 
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