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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

Fuel tank issue

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Old Jul 9, 2018 | 11:42 AM
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Whitty121
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Fuel tank issue

Hi, I’m having a big issue with my truck.

i replaced the front tank pump yesterday, it all went well. Truck runs great.

its pushing gas from the front tank to the rear tank though, the rear tank doesn’t work, the pump was gone when I bought it.

i really don’t want to put a second pump in the rear tank, I won’t use it anyway I’m sure.

what can I do, is there a check valve gone or have I got to replace the pump to stop it leaking. It’s so full it’s coming out the rear tank filler neck.
 
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Old Jul 9, 2018 | 01:32 PM
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You didn't say what year, model & motor as it can make a difference how the duel tanks are set up.

Some have a 6 port switching valve that can hang up, and others I here have a check valve in the pump that the tank doesn't have.

BTW how you going to get that gas out?
Dave - - - -
 
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Old Jul 9, 2018 | 03:33 PM
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You are correct I apologise, it’s a 1995 5.0 Eddie bower 2wd
 
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Old Jul 9, 2018 | 05:50 PM
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The check valves are inside the FDM that contains the fuel pump inside the tank, so your only options are replace the rear tank FDM or disconnect and plug both fuel lines to the tank..
 
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Old Jul 9, 2018 | 09:42 PM
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Thank you so much. New pump ordered. Hope the tank isn’t rusty inside. Front one was good.

i got some pb working on the bolts.

I did notice something odd, my tow hitch is welded on !
 
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