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MI-Bill
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Joined: 30 Mar 2006
Posts: 35
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 Posted: Sat Aug 04, 2012 7:46 am Post subject: old gas tank sealer going soft and gummy |
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I have a JD B gas tank with old sealer that is going soft and plugging up the gas lines and carb. Is there a way to clean out or strip the sealer? I have not pulled the tank yet?
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Stephen Newell
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Joined: 11 Jun 2011
Posts: 1641
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| Posted: Sun Aug 05, 2012 3:17 am Post subject: Re: old gas tank sealer going soft and gummy |
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What brand of sealant did you use? I've never heard of sealant going bad. I don't think any solvent would touch it. The only thing I can think to even try is to heat the tank with a heat gun and burn the sealant loose. Of course you would have to thoroughly clean the gas out of the tank like you were going to weld on it first.
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joe fabregas
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| Posted: Sun Aug 05, 2012 4:17 am Post subject: Re: old gas tank sealer going soft and gummy |
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Acetone will supposedly remove some sealers. Good luck! joe-
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rustyfarmall
Tractor Guru
Joined: 07 Feb 2003
Posts: 18475
Location: Southwest Iowa
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| Posted: Sun Aug 05, 2012 4:35 am Post subject: Re: old gas tank sealer going soft and gummy |
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Muriatic acid will remove the gas tank sealers and liners.
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MI-B ill
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Joined: 18 Jun 2012
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| Posted: Sun Aug 05, 2012 8:58 am Post subject: Re: old gas tank sealer going soft and gummy |
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pre ethanol sealers!
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souNdguy
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Joined: 20 Aug 2002
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| Posted: Wed Aug 08, 2012 5:02 am Post subject: Re: old gas tank sealer going soft and gummy |
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i have an allis G tank that was sealed many years back.. the new ethanol gas is slowly sofetening the sealer.. i pulled the fuel line the other day and it was packed up to the valve...
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Stephen Newell
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Joined: 11 Jun 2011
Posts: 1641
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| Posted: Wed Aug 08, 2012 1:50 pm Post subject: Re: old gas tank sealer going soft and gummy |
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I used some Red Coat fuel tank liner a couple of weeks ago and spilled some on a saw horse. Out of curiosity this afternoon I put some Kleen Strip paint and varnish remover on it and it removed it. I know just being a couple of weeks old is not really a fair test but I thought I would pass the info along.
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36 Coupe
Tractor Guru
Joined: 12 Mar 2010
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| Posted: Sun Sep 02, 2012 2:18 am Post subject: Re: old gas tank sealer going soft and gummy |
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Bad advise.Many sealers used alcohol as a solvent.Cork gas tank floats were sealed with shellac.Ethanol will ruin them.My 77 chevy had a Rochester carberator with a plastic float that absorbed gas.Ethanol may attack the plastic.
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rustyfarmall
Tractor Guru
Joined: 07 Feb 2003
Posts: 18475
Location: Southwest Iowa
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| Posted: Sun Sep 02, 2012 5:38 am Post subject: Re: old gas tank sealer going soft and gummy |
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| 36 coupe wrote: | | (quoted from post at 03:18:28 09/02/12) Bad advise.Many sealers used alcohol as a solvent.Cork gas tank floats were sealed with shellac.Ethanol will ruin them.My 77 chevy had a Rochester carberator with a plastic float that absorbed gas.Ethanol may attack the plastic. |
Those composite floats used in many GM cars and trucks were a BIG problem LONG before ethanol was introduced. I personally replaced a BUNCH of them while working as a mechanic in the early '70s.
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