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Restoration & Repair Tips Board

old gas tank sealer going soft and gummy

Author  [Modern View]
Mi-Bill

08-04-2012 08:46:47
70.194.10.136



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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

08-08-2012 14:50:35
66.53.81.15



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 Re: old gas tank sealer going soft and gummy in reply to Mi-Bill, 08-04-2012 08:46:47  
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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rustyfarmall

08-05-2012 05:35:25
67.55.162.174



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 Re: old gas tank sealer going soft and gummy in reply to Mi-Bill, 08-04-2012 08:46:47  
Muriatic acid will remove the gas tank sealers and liners.



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joe fabregas

08-05-2012 05:17:27
12.75.110.196



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 Re: old gas tank sealer going soft and gummy in reply to Mi-Bill, 08-04-2012 08:46:47  
Acetone will supposedly remove some sealers. Good luck! joe-



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Stephen Newell

08-05-2012 04:17:52
66.53.80.236



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 Re: old gas tank sealer going soft and gummy in reply to Mi-Bill, 08-04-2012 08:46:47  
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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36 coupe

09-02-2012 03:18:28
66.186.169.176



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 Re: old gas tank sealer going soft and gummy in reply to Stephen Newell, 08-05-2012 04:17:52  
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

09-02-2012 06:38:44
67.55.162.174



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 Re: old gas tank sealer going soft and gummy in reply to 36 coupe, 09-02-2012 03:18:28  
Quoting Removed, click Modern View to see

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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soundguy

08-08-2012 06:02:32
184.233.62.227



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 Re: old gas tank sealer going soft and gummy in reply to Stephen Newell, 08-05-2012 04:17:52  
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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MI-B ill

08-05-2012 09:58:25
70.194.9.234



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 Re: old gas tank sealer going soft and gummy in reply to Stephen Newell, 08-05-2012 04:17:52  
pre ethanol sealers!



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