Bypass front tank

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Oct 6, 2009 | 09:35 AM

rjaywhit

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From: NE Georgia

Bypass front tank

I have a 97F250 with dual tanks. When I use the back tank the front fills to overflowing. I would like to only use the back tank since the guage works on the back tank but not the front and I don't need two tanks of fuel.

Is there a way to bypass the front tank so that it does not fill up when the rear tank is used. I don't want to replace the front tank sending unit.

There are three hoses connecting to the front tank. I assume that one is the supply line, another is the return line, but what is the third line?

Can I remove all three from the tank and plug them?

Thanks for the help.

Oct 6, 2009 | 12:30 PM

Conanski

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From: Ottawa, Ontario

Yes disconnect the lines at the tank and make plugs for them, I did so with some studs. The 3rd line is a vent plug that too.

Oct 6, 2009 | 01:00 PM

rjaywhit

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From: NE Georgia

Thanks, I'll give it a try.

Oct 6, 2009 | 02:07 PM

gthbryce

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From: Carmichael, CA

Does this also happen but in reverse ? When you fill up the front tank some goes into the rear tank? I only use the front and the switch is set to front tank and the fuse pulled.. Is any gas overflowed into the rear?

Oct 6, 2009 | 02:14 PM

Conanski

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From: Ottawa, Ontario

Yes.. the crossflow problem can happen both ways, back to front or front to back. The FDM is the same in both tanks with straight hose between them and a T fitting going to the motor.