Gas Tank Replacement

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Apr 11, 2016 | 10:29 AM

Brother Hec

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Gas Tank Replacement

I have 79 f150 4x4 with a metal tank in rear. I have taken out the tank to replace hoses (leaking) and remove rust from outside of tank. I will be repainting tank and metal holding straps before replacing. Question is whether tank will require a ground so that float/gauge will work? I plan to replace rotten canvas liners inside metal straps with rubber so that that tank does not rub with metal straps and cause holes. If so, then it will insulate tank from frame. Do I need to wire a ground strap from tank to truck frame?? Please advise me on best way to make sure the electrical float/gauge will work.

Thanks,
Brother Hec
Las Cruces, NM

Apr 11, 2016 | 11:01 AM

HoustonDave

Fleet Mechanic

Joined: Sep 2014

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From: NE Texas

Your sending units has a separate ground which screws to the frame... just dropped my tank this weekend to extend the float arm to make a 19 gallon sender work better with a 38 gallon tank.

Apr 11, 2016 | 11:10 AM

Brother Hec

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Thanks for the reply. My old tank did not have a ground connection from sending unit to frame. This is why I was thinking ground was through tank connection with metal straps. I will make a connection from sending unit to frame... good idea, THANKS!

Apr 11, 2016 | 11:24 AM

HIO Silver

Fleet Owner

Joined: Dec 2009

Posts: 20,678

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From: NorCal

If in doubt, add a ground.

Ya can't have 'too many grounds' on these trucks.

.

Apr 11, 2016 | 11:52 AM

hasteranger

Lead Driver

Joined: Mar 2010

Posts: 5,250

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From: West Virginia

Yeah sending unit has its own ground and that ground being bad is a common source of failure...but tank itself doesn't have or need a ground. My tank is plastic.