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EFV-8 Club Forum / General Ford Discussion / Leaking gas tank

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Discussion Topic: Leaking gas tank

vstol

06-24-2012 @ 6:25 PM

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My 52 custom line sedan has developed a leak at the drain plug on the gas tank any suggestions on a sealant or gasket to fix the leak.

fla48

06-24-2012 @ 6:33 PM

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Teflon tape worked for me.

supereal

06-24-2012 @ 7:18 PM

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It is likely the tank has developed weak spots around the plug. Those plugs are usually impossible to remove because they were in place when the tank was coated with "tern", a solder-like material. When a gas tank leaks, for safety's sake, replace it. Don't fool around with coatings, etc. Gas is dangerous stuff, and saving a buck or two could cost your life.

trjford8

06-24-2012 @ 8:37 PM

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fla48, the plug in a gas tank is a pipe thread. You should not use teflon tape on pipe thread.
I agree with Bob on the purchase of a new gas tank. By now the tank probably has been damaged by rust and should be replaced. My neighbor took the tank out of his 53 Victoria. It looked good from the bottom,but had some varnish on the inside. He was going to clean it up and use it. Just to make sure the tank was solid he tapped on the top with a small hammer. The hammer knocked a hole in the top and it was so thin you could almost tear the top off by hand. You can buy a new tank for the cost of trying to save an old tank. Buying a new tank is cost effective and adds a big measure of safety.

ford38v8

06-24-2012 @ 9:48 PM

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If it is the drain plug itself that is leaking, old fashioned pipe dope is specifically for use on pipe thread. As others have advised, the tank itself should not be messed with.

Alan

vstol

06-25-2012 @ 2:50 PM

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Thanks for answering my question, the tank is still good but after almost 60years the sealant Ford used to seal the drain plug gave up, maybe the ethanol although since I got the car I use only real gas. The plug came out easily so need a sealant for the threads and a gasket.

trjford8

06-26-2012 @ 7:02 AM

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The plug in the tank is a pipe plug and does not need a gasket. Maybe someone has replaced the plug with a non -pipe thread plug and used a sealant plus a gasket to seal it up.

okydoky

07-13-2012 @ 9:40 AM

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I had the same problem with my 39 ford. My friends at DAYTONA CARBURATOR gave me this tip.

USE PERMATEX MEDIUM STRENTH THREADLOCKERBLUE GEL.

Find it at most local auto pars dealers. It comes in red or blue. The red is too strong. You may have problems getting the plug out if you ever need to. Be sure you get the blue.

Hope this helps. It solved my problem.

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