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Fast fix for a leaking fuel tank?HELP!

post #1 of 23
Thread Starter 
Just filled my 91 s15 jimmy with gas and the tank is leaking somewhere are there any quick fixes I have a tournament on the beach tomorrrow!
post #2 of 23
You need to get under that thing or get it up on a lift and figure out what that "somewhere" is all about. About the only thing that can be quick-fixed is a pinhole type leak in otherwise sound metal. There's small thread cutting screws with sealing gasket type washers under their heads which can deal with that at least for a while. If you've got rust rot or a seam opening up, it's gonna be a whole different ballgame but in any event, get it dealt with without delay.
post #3 of 23
If it's leaking from the top of the tank, and it's set up anything like my 89 S-10, chances are it's the fuel pump/sending unit. Dirt piles up where the steel lines exit and causes rust leading to pinhole leaks.

Bring your heart medication for when you find out how much the part costs.

post #4 of 23
I'm sorry for such a late reply to your question/problem, but for future reference, I received this advice from some 4x4 club members some years ago when I hit something in the road on the way to a car show with my show this may sound stupid......IVORY SOAP! yes Ivory soap, just take the bar of soap and scrape it into the area when it is dripping gas, oil, tranny fluid, etc., it worked for me! something with the Ivory soap that it swells and seals the leak. yes, it did work for me and I was allowed into the show, it was an indoor show. keep a bar of this in your tool box?!@# good luck and again, sorry for the late response.
post #5 of 23
ivory soap worked for me years ago with the old gass
post #6 of 23
Obviously a bit late but 2 part plumbers putty sold at Lowe's Or HD. cut off a chunk, knead it and press it into the area that is leaking. It will cure in a couple minutes and last longer than the rest of the tank.

post #7 of 23
As an apprentice mechanic in the mid-60s, I can recall the old-timers talk about and agree on how to make gonzo repairs on gas leaks in the boonies, so as to be able to limp into town. This was in rural Oregon, so there were a lot of instances of gas tanks ruptured from dragging over rough rocky cow trail roads, and also cracked carburators caused tapping on them with a hammer or a rock trying to free a stuck carburator float. Regarding carburators, the old-timers swore that the good temporary repair could be had by rubbing a bar of soap over the crack in a carburator. But for the thinner metal of a gas tank, they agreed that chewing gum was an effective temporary repair; the gum is chewed to softness and then pushed into and around the rupture. This is fine if you are in the boonies needing a temp fix, but if you can make it to town then the bigger and better supplied auto parts stores will have a product which (if I recall correctly) is called Seal All (costs about 10 clams). I did use this product successfully to seal a large leak on gas tank. It is clear and has a consistency similar to clear silicone, but silicone will not stand up to gasoline, and Seal All specifically states that it can withstand gasoline, and my experience is that it works to seal gas tank leaks. I used a brass (brass is safe from creating sparks) wire brush made for use with a drill to clean the affected area of the tank down to bare metal. I think that for safety it would be best to empty the fuel tank before using a power tool on the tank, even with a brass brush. I brushed down to bare metal a much larger area than the leak, so as to have a bigger surface area for the Seal All to adhere to, thinking this would better my chances of success. Be sure to give the Seal All the recommended time to cure, and you're good to go. My post is too late to be of help to the original poster, but others will happen onto this thread as the years go by, and may find our suggestions of value. I'm just sayin'.
post #8 of 23
bet you need a new gas tank. when i was looking at trucks i noticed a lot of the older ones leaked gas. your lookin at anywhere from $100-200 for the tank if you get it online and about 3 hours of labor to get it put in
post #9 of 23
Perhaps the OP solved the problem 4 years ago when this thread was first posted. I sure hope so.
post #10 of 23
Originally Posted by Darth Baiter View Post
Perhaps the OP solved the problem 4 years ago when this thread was first posted. I sure hope so.

If not, he's definitely outa gas by now
post #11 of 23
BAR OF SOAP..... rub a bar of soap over the crack/hole where it is leaking will seal it right up and harden like a rock
post #12 of 23
Originally Posted by DaveS View Post
If not, he's definitely outa gas by now

He's not toast, he posted last week.
post #13 of 23
Four years ago
post #14 of 23

Hope u made it to the tournament, dude! Going back 4 yrs, we're all curious tho, did u ever fix yr jeep? And make it to the tournament?!

post #15 of 23

Hello, My husband has a leak on the seam of his gas tank... will that still work to fix his leak?

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