Gas Leak
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Junior User
Joined: Mar 2011
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From: Northern Illinois
Gas Leak
Hey guys, well i looked under my truck the other day and noticed a gas leak that's been there for awhile on my rear tank. It's a minor pinhole leak to where it evaporated before it made a puddle. But I've probly been loosing about a cup a day for a while. If i use JB Weld, will that patch it, or is there something better?
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Joined: Aug 2005
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From: Cleveland, TN
By the time you get the spot cleaned enough for JB Weld to even stick I'll bet the pinhole is MUCH larger... if the pin hole is from rust.... If something poked a hole in a solid tank you may have a chance..
It might hold for a while but don't count on it...
They used to make a gas tank "repair" epoxy, I haven't seen it in years so I don't know if it's still out there..
Sorry to say if it were mine I think I would be saving up for a new tank....
It might hold for a while but don't count on it...
They used to make a gas tank "repair" epoxy, I haven't seen it in years so I don't know if it's still out there..
Sorry to say if it were mine I think I would be saving up for a new tank....
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Joined: Oct 2010
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I need a new rear tank as well. I have a buddy who parts out Ford trucks and that is one of the parts that is NEVER sound when a parts trucks roll in: others; front rotors, rocker panels. Long before people give up the ghost on their truck they do what I have done: leave the tank selector switched to "front" and stop more often. Just run the rear tank dry and switch to front when it starts to quit on ya.
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Joined: Mar 2011
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From: Northern Illinois
My front tank doesn't work, i think i need a new sending unit because the fuel pump works. i was looking on Discount Auto Parts Online - Import Auto Parts -- PartsGeek.com and the rear tank is pretty cheap so i guess i'll just go that route. thanks guys
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Joined: Nov 2010
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From: Graniteville
Hey guys, well i looked under my truck the other day and noticed a gas leak that's been there for awhile on my rear tank. It's a minor pinhole leak to where it evaporated before it made a puddle. But I've probly been loosing about a cup a day for a while. If i use JB Weld, will that patch it, or is there something better?
If you have to "redneck patch" it, try the JB Quickweld. It's actually a pretty good product. On my Pete, I had a slow-seep leak show up on the bottom of the oil pan, went and got a quote for a new pan $1400 plus labor.... I decided at that cost, I would take a gamble on the JB Quick at $6.99 in the truckstop. Went out and wiped it off with brake cleaner, and then started working the JB over the hole, slowly adding a little more to make a nice patch area until it stopped... long story short, 1 year later when I did an out of frame, I pulled the pan off, inspected it, and ended up just cleaning the pan and repainting the thing. Never even messed with the JB patch. That was in '08, I originally patched it and the patch is still there to this day.
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If you live in an area where they use salt you might want to give the entire tank a good dose of some kind of undercoat or some other coating before you put it on (if you can). They always seem to rust out where the mounts (kind of like metal straps that span the tank for front to back) come into contact with the tank. You would think they would wise up an make the mounts out of a noncorrosive material. But I guess after 15 years (I have a 96) stuff just happens. Make sure to have a buddy with you when you put the new tank in, it's kind of a balancing act trying to get the tank into place and push it up far enough to get the bolt through the back frame and the mount and get a couple of turns on the nut with one hand. Good luck!
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