Fuel tank sending unit

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Apr 9, 2015 | 09:01 AM

264WSM

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From: Wyotana

Fuel tank sending unit

Seems all I can find is a replacement for a gasser. Is there a difference between the diesel and gas fuel tank sending unit?? (other than the pump - I can pull that off)

Apr 9, 2015 | 04:27 PM

Xyeniko

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https://www.ford-trucks.com/forums/1...g-units-5.html

Apr 11, 2015 | 08:53 AM

264WSM

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From: Wyotana

Thanks for the link, seems there is a difference.
Both of my metal tubes have broken loose from the plate that is the top of the sending unit. I tried JB Weld and that failed (& leaked). I could try brazing or welding them. Just afraid welding will burn thru the tubes and then I'll just suck air. Junk yard could be the only option.

Apr 11, 2015 | 09:48 AM

Chevy_Eater

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It really helps if you put your truck info in your post or signature as replacement/repair options will change depending on the generation of truck you have.

Apr 12, 2015 | 05:44 PM

264WSM

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Tuned

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From: Wyotana

'89 F -250. Rear tank. I have an extra capacity (36 or 38 gal) Spectra tank. Any OEM type sending unit will work, I'll just modify it to suck from the bottom.

Apr 13, 2015 | 01:01 AM

tecgod13

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From: Western Mass

Brazing or soldering your tubes should work. I'm a little surprised that JB weld didn't work. Maybe you didn't put a thick enough layer on.

Apr 13, 2015 | 06:07 AM

NumberDummy

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From: Simi Valley, CA

Quote:

Originally Posted by 264WSM

1989 F250 aft axle fuel tank: Seems all I can find is a replacement for a gasser. Is there a difference between the diesel and gas fuel tank sending unit?? (other than the pump - I can pull that off)

Gas sending unit different than diesel. Plastic aft axle tank sender different than steel aft axle tank sender, wheelbase also makes a difference.

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Apr 14, 2015 | 06:52 PM

264WSM

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Tuned

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From: Wyotana

Both pick up tubes are loose from the metal tank plate - this causes a leak when full, until 3/4 or 5/8 tank.
It is an extended cab but the rear tanks are the same as in strd cab.

Apr 14, 2015 | 07:45 PM

#10

Xyeniko

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you'd think an oil resistant gasket maker would work to stop the leak. you're refering to the metal tubes on top of the sending unit rotted out around the tubes so they're free from the plate?

Apr 14, 2015 | 08:12 PM

#11

madpogue

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From: Madison, WI

So you need the showerheads, and/or repairs to the pickups. That's a LOT cheaper than the sending units. IIRC, the sending unit just attaches to the return pipe Are the leaks in the lines above the plates, or inside the tanks? I would think if it were inside the tank, they would just cause the fuel pump to draw air below that level. And if it were outside, it would leak all the time that fuel is flowing through it. Do you have it off the truck, can you post a pic?

Cab type has no bearing on the tanks. All (stock) rear tanks on the pickup trucks are the same, "officially" 18 gallons. Front tanks vary by BED size; short bed gets a 16-gallon tank, long bed gets a 19-gallon tank.

Apr 15, 2015 | 03:12 PM

#12

NumberDummy

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From: Simi Valley, CA

Quote:

Originally Posted by madpogue

Cab type has no bearing on the tanks. All (stock) rear tanks on the pickup trucks are the same, "officially" 18 gallons. Front tanks vary by BED size; short bed gets a 16-gallon tank, long bed gets a 19-gallon tank.

Take a look-see at these fuel tank applications from the 1980/89 truck parts catalog. 99 is a Styleside pickup.

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Apr 15, 2015 | 03:45 PM

#13

madpogue

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From: Madison, WI

^^^^ Oops, I was thinking OBS. Forum section phase shift.....

Jul 4, 2015 | 08:49 PM

#14

264WSM

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From: Wyotana

I got them brazed up and will be installing them this week. The truck is loosing prime now and I'm thinking it might be in the tank selector switch. I replaced the inj equalizing/return lines 3 months ago.

Jul 10, 2015 | 02:47 PM

#15

264WSM

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From: Wyotana

The brazing worked as I put 36 gal in the tank and no leaks.
As far as the loss of prime, I'm gonna try the return lines. It was my 88 that I did 3 months ago not the 89.