Fuel leak - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 10-22-2013, 12:21 PM Thread Starter
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Fuel leak

I have a fuel leak that just started from the rear tank. It's dripping down the spare tire onto the ground it only does it sometimes not always. I haven't had time to crawl under the truck and look yet I just wanted to know if you guys had any suggestions before I dug into it. I haven't added any fuel to the rear tank due to the leak but it still leaks, so I'm thinking it might be the selector valve? I'm not sure though. Thanks in advance for any help you guys can give me.


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post #2 of 13 Old 10-22-2013, 12:33 PM
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the selector valve is under the cab.
how much fuel is in the tank?

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post #3 of 13 Old 10-22-2013, 02:17 PM
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4x4 or 2WD?
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post #4 of 13 Old 10-22-2013, 02:17 PM Thread Starter
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Quote:
Originally Posted by erics diesel View Post
the selector valve is under the cab.
how much fuel is in the tank?
I ran it low the last time I used it. About 2 weeks ago. Haven't added any since. I figured maybe 2 gallons. By now, I don't know how there could be any left. It has been leaking 2' round puddles for the last week or so.


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2001 F-250 Lariat CCSB, 4x4, ZF6 249k, 6.5" Procomp lift, 37" Toyo M/T's, 20" Fuel Hostages. PIS 160/30's, PHP Hydra, 6637, 4" exhaust, Tank mods, ISSPRO's, 08+ mirrors/tailgate/tail lights, M12000 winch.



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post #5 of 13 Old 10-22-2013, 02:18 PM Thread Starter
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Quote:
Originally Posted by madpogue View Post
4x4 or 2WD?
It's the OBS in my sig, 4x4.


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post #6 of 13 Old 10-22-2013, 02:48 PM
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Sigs can be turned off.

Bet a nickel the bottom of the tank is rusted. When you drop the spare, you'll see that there are NO tank straps. The skid plates are holding up the tank. Provides a nice place for wet gunky road crud to build up where the tank sits on the plates, and the wetness eventually rusts the tank.
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post #7 of 13 Old 10-22-2013, 02:54 PM
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i'm with madpogue on this one

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post #8 of 13 Old 10-22-2013, 02:56 PM
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Does it leak when the truck is running and on the rear tank? My feed and pickup tubes on the fuel pickup unit were rusted and leaking.
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post #9 of 13 Old 10-22-2013, 03:23 PM
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To the OP , I just finished replacing the rear tank for the very same reason .

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post #10 of 13 Old 10-22-2013, 09:02 PM Thread Starter
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Thanks guys. I'll check it out in depth this weekend. Now I have a better idea what to look for.


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2001 F-250 Lariat CCSB, 4x4, ZF6 249k, 6.5" Procomp lift, 37" Toyo M/T's, 20" Fuel Hostages. PIS 160/30's, PHP Hydra, 6637, 4" exhaust, Tank mods, ISSPRO's, 08+ mirrors/tailgate/tail lights, M12000 winch.



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