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Old 09-12-2014, 06:22 PM   #1
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Fuel tank drain plug issues

I recently purchased a 1989 Fleetwood Bounder, it seems that when I put in gas over a half of tank, the fuel tank drain plug starts to drip ever so slightly, it is not a lot at first, but once we are setup at our spot and sitting for a couple of days it seems to be a pretty substantial drip, but when it gets back to a quarter of a tank of gas it stops leaking. It does appear that it has been JB welded previously, but not at the same place it is dripping from, it seems to be around the threads themselves. I am hesitant about trying to tighten the drain plug more, in fear it may let loose and strip out of there. Any thoughts on how to fix this problem without having to replace the drain plug or remove the tank would be greatly appreciated. JB weld the plug?

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Old 09-12-2014, 06:25 PM   #2
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This may sound crazy, but I once had a pinhole leak in a truck fuel tank and someone recommended rubbing a bar of soap to plug leak TEMPORARILY........ it worked. This may be enough of a repair to avoid dripping fuel until you are somewhere to fix it properly

Joe 1998 Itasca Sunflyer Ford 460

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Old 09-12-2014, 10:53 PM   #3
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This goes back a few years (like 30). My wifes Thunderbird developed a gas tank leak. The local car parts store, Auto Zone or similar, had a crayon like gasoline leak sealer. It worked and I never did do additional repairs. I think I've seen the same product lately. Ask your local auto supply store about it.
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Old 09-13-2014, 04:48 PM   #4
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Thanks guys for the advise, unfortunately it looks a limitless worse than I thought, upon crawling under there again, I found that the front gas tank brace is loose, tightened up the drivers side bolt, but the passengers side bolt just spins, and no way to get to the nut on top of the frame, to tighten the rod back up, hope a I am not doomed
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Old 09-13-2014, 05:28 PM   #5
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Since you have a loose brace and a leaking tank that was improperly 'fixed' with JB Weld, the only safe way to deal with it would be to drop the tank and have it repaired properly. Soap or any wipe on repair will probably fail again. You sleep in this vehicle, it should be repaired properly. Use vice-grips to hold the rod and loosen the bolt on the bottom of the brace to remove it.

Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 09-13-2014, 08:31 PM   #6
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If the spinning bolt is badly rusted you may want to use a nut splitter to remove the nut - assuming you can reach it with the nut splitter. Might be a little easier than the tried and true vise grip method.

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fuel, tank

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