Dual fuel tank problem
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4wd Low
Joined: Dec 2021
Posts: 14
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From: Texas
Dual fuel tank problem
Will not run on back tank, but when I fill up, that's the tank that holds the most. Gauge doesn't work on front, but shows full on back. I bought a Haynes repair manual, but can't really find what I'm looking for. Actually, I'm not sure what to look for. Any help would certainly be appreciated. Previous owner had new back tank installed. 93 F150 XLT.
Last edited by kingary49; Dec 6, 2021 at 01:31 PM. Reason: Add year model
Hotshot
Joined: Jun 2015
Posts: 12,833
Likes: 2,436
Why are you putting gas in a tank with a dead pump? The front tank must be siphoning gas from the rear. I think you might have a problem with both fuel delivery modules. Maybe you have already replaced the bad part(s). The thread is two years old.
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