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Gas fuel tank repair...

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Mike in Utah

05-26-2006 20:30:37

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I have a gas fuel tank and it has a small leak near the top. Apparently something hit the tank and caused a small crease - that's where it's leaking. The crease is about 1/2-inch long and when the tank is full it leaks about one drop every two minutes. Do they make something to seal this or what would you suggest to fix it?

Thanks ...

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joe moore

05-28-2006 07:15:21

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Re: Gas fuel tank repair... in reply to Mike in Utah, 05-26-2006 20:30:37

my tank is off due to gas tank unit
sending problems but I patched a hole with JB steel epoxy works fine after removing the rust with sandpaper and fine wire brush..

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Dan-IA

05-27-2006 20:10:32

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Re: Gas fuel tank repair... in reply to Mike in Utah, 05-26-2006 20:30:37

I live dangerously. Brazed/soldered/welded on gas tanks full of gas. Trick is to make sure it's full to the brim and the cap is on tight. No air, no fire.

For the less courageous, I'd say take the fuel line off, drain the tank of gas, fill with water, then braze it. It's really not necessary to remove the tank to fix it unless the hole is in an unhandy spot.

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huntingreen

05-26-2006 22:04:38

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Re: Gas fuel tank repair... in reply to Mike in Utah, 05-26-2006 20:30:37

Be real careful if grinding on a gas tank. If you can solder it with a hot iron solder that might be best.

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Jim Johnson

05-26-2006 20:56:13

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Re: Gas fuel tank repair... in reply to Mike in Utah, 05-26-2006 20:30:37

J B Weld,or Mangnum in a tube, it works great, grind it in a few minutes, I've stopped a lot bigger leaks than that in a fuel tank and still holding.

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Jim Johnson

05-26-2006 21:01:47

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Re: Gas fuel tank repair... in reply to Jim Johnson, 05-26-2006 20:56:13

Oh, clean it gooood.

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Mike in Utah

05-26-2006 21:25:50

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Re: Gas fuel tank repair... in reply to Jim Johnson, 05-26-2006 21:01:47

Jim,

Thanks for the response. I'll try that!

Hmmm, just wondering, since it's just a hairline crack would one of the Loctite products work? Seems if I could put a slight vacuum on the tank it would suck the Loctite it into the crack where it would do the most good. Says it fixes hairline cracks. Any thoughts regarding this?

Loctite 290

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Bob

05-26-2006 21:50:38

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Re: Gas fuel tank repair... in reply to Mike in Utah, 05-26-2006 21:25:50

Find and old-time radiator shop that still repairs gas tanks, and have them solder it, soldering a patch over the damage, if necessary.

While I'm sure there will be other opinions, I really don't believe any other repair will be permanent.

Some of the "magic goops" will work for a while, then almost certainly they will crack or separate from the base metal, and the leak will start up again.

Then, the residue from the goop will just make fixing it right even harder.

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souNdguy

05-26-2006 22:09:13

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Re: Gas fuel tank repair... in reply to Bob, 05-26-2006 21:50:38

JB weld 2 part epoxy, both regualr and qwick is gas 'inert' once cured. I got this right from the makers when i sent them an email. The carb on my 8n has jb weld repairing the corner inlet that was cracked by the previous owner. Been on there since the day i got my 8n. They also mentione dthe jb-water-weld stick ( white color ) is also gas inert once cured. I have this on a fuel line on my IH cub. The steal line had a pinhole ( never seen that one before! ), and i put a ring of waterweld around it.. been that way for years.

Just gotta clean down to bare metal with carb cleaner first.. then apply and let cure completely.

I like the solder idea.. good luck on geting somebody to weld or solder on a gas tank... I've never found anyone that would do it.

Kreem or POR-15 would work as well... they are both epoxy fuel tank liners...

Soundguy

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Bus Driver

05-27-2006 04:32:48

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Re: Gas fuel tank repair... in reply to souNdguy, 05-26-2006 22:09:13

I have had good results with epoxy. Sand by hand and then use lacquer thinner to insure no oil remains. Kreem and POR-15 are definitely not epoxies. Kreem is a plastisol and POR-15 is urethane.

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souNdguy

05-27-2006 21:13:32

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Re: Gas fuel tank repair... in reply to Bus Driver, 05-27-2006 04:32:48

I was just going by what was listed on a dealers website.. it listed them as 2-part epoxy gas tank repair materials. I've not used either.. but have used jb weld.

Soundguy

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Mike in Utah

05-28-2006 19:03:41

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Re: Gas fuel tank repair... in reply to souNdguy, 05-27-2006 21:13:32

Guys, thanks for the responses!

I don't like to live on the edge by soldering the tank like some of you do so I used JB weld. I guess time will tell if it works or not.

Thanks again all...

Mike

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