The Ford Barn

vstol · 06-24-2012, 08:11 PM

my 52 custom line sedan has developed a leak at the drain plug on the gas tank I used a sealant last year but it has started dripping again any suggestions as to a sealant or gasket.

47COE · 06-24-2012, 08:21 PM

Is it leaking through the drain plug threads? What did you use to seal it?

Tom

vstol · 06-25-2012, 04:55 PM

It is leaking through the drain plug threads, I don't recall the name of the sealant but it was suppose to work for diesel and gas didn't last but a year and a half.

G.M. · 06-25-2012, 05:45 PM

Use Teflon tape but keep it back off the first two threads. G.M.

19Fordy · 06-25-2012, 06:07 PM

I bought the 5 oz tube of "E-Z Turn Lubricant" and used it to seal my fuel pressure gauge and it actually worked. I only used a dab of it but I figured it was worth having, despite the cost. http://www.aircraftspruce.com/catalo...ezturnlube.php

ken ct · 06-25-2012, 07:11 PM

Sponsored Links (Register now to hide all advertisements)

Quote:

Originally Posted by G.M.

Use Teflon tape but keep it back off the first two threads. G.M.

I cant believe you said that. Gasoline and Teflon tape do NOT mix. It will eventually soften and end up in the carb. Great for a carb clean out job. Thank you. ken ct.

37don · 06-25-2012, 07:14 PM

I use Tite Seal T25-66 it is a medium weight paste and it has worked on any thread I ever put it on. We used it extensively on Subs.
Don

gmc1941 · 06-25-2012, 08:12 PM

Is there any possibility that the threads have a crack in the fitting? I wouldn't spend to much time on sealing the leak if you have a cracked fitting.

TJ · 06-25-2012, 08:34 PM

The plug is a pipe thread. I would never use teflon tape on a pipe thread or around gasoline. If you used teflon tape the first time you may have split the fitting in the tank. I've seen a transmission case crack when the plug had teflon tape on it. It allowed the plug to turn too easy into the threads and crack the case.

ken ct · 06-25-2012, 08:48 PM

Quote:

Originally Posted by TJ

The plug is a pipe thread. I would never use teflon tape on a pipe thread or around gasoline.

Im with you TJ, bad advice from some one who should know better. ken ct.

gmc1941 · 06-25-2012, 09:28 PM

If you can remove the plug, I would chase the threads and replace the plug and coat it with a Prematex Form a gasket #3 which is designed for todays modern fuels. You may have slightly loose threads ( or worn ) on the pipe plug.

06-24-2012, 08:11 PM	#1
vstol Junior Member Join Date: Mar 2011 Posts: 14	Leaking gas tank my 52 custom line sedan has developed a leak at the drain plug on the gas tank I used a sealant last year but it has started dripping again any suggestions as to a sealant or gasket.

06-24-2012, 08:21 PM	#2
47COE Senior Member Join Date: Apr 2011 Location: Oregon Posts: 220	Re: Leaking gas tank Is it leaking through the drain plug threads? What did you use to seal it? Tom

06-25-2012, 05:45 PM	#4
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: Leaking gas tank Use Teflon tape but keep it back off the first two threads. G.M. __________________ www.fordcollector.com

06-25-2012, 06:07 PM	#5
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,950	Re: Leaking gas tank I bought the 5 oz tube of "E-Z Turn Lubricant" and used it to seal my fuel pressure gauge and it actually worked. I only used a dab of it but I figured it was worth having, despite the cost. http://www.aircraftspruce.com/catalo...ezturnlube.php

06-25-2012, 07:14 PM	#7
37don Senior Member Join Date: May 2010 Location: South Kingstown, R.I. Posts: 262	Re: Leaking gas tank I use Tite Seal T25-66 it is a medium weight paste and it has worked on any thread I ever put it on. We used it extensively on Subs. Don

06-25-2012, 04:55 PM	#3
vstol Junior Member Join Date: Mar 2011 Posts: 14	Re: Leaking gas tank It is leaking through the drain plug threads, I don't recall the name of the sealant but it was suppose to work for diesel and gas didn't last but a year and a half.

06-25-2012, 08:12 PM	#8
gmc1941 Senior Member Join Date: Jun 2010 Location: Palatine, Il Posts: 486	Re: Leaking gas tank Is there any possibility that the threads have a crack in the fitting? I wouldn't spend to much time on sealing the leak if you have a cracked fitting. __________________ 1939 Fordor Deluxe 1939 Ford Coupe Std 1940 Ford pickup Nothing in life is to be feared; it is only to be understood.

06-25-2012, 08:34 PM	#9
TJ Senior Member Join Date: May 2010 Location: Napa,California Posts: 6,037	Re: Leaking gas tank The plug is a pipe thread. I would never use teflon tape on a pipe thread or around gasoline. If you used teflon tape the first time you may have split the fitting in the tank. I've seen a transmission case crack when the plug had teflon tape on it. It allowed the plug to turn too easy into the threads and crack the case. Last edited by TJ; 06-25-2012 at 10:41 PM. Reason: add info

06-25-2012, 09:28 PM	#11
gmc1941 Senior Member Join Date: Jun 2010 Location: Palatine, Il Posts: 486	Re: Leaking gas tank If you can remove the plug, I would chase the threads and replace the plug and coat it with a Prematex Form a gasket #3 which is designed for todays modern fuels. You may have slightly loose threads ( or worn ) on the pipe plug. __________________ 1939 Fordor Deluxe 1939 Ford Coupe Std 1940 Ford pickup Nothing in life is to be feared; it is only to be understood. Last edited by gmc1941; 06-25-2012 at 09:38 PM. Reason: More info