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Old May 19, 2026 | 10:42 PM
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Default Gas tank issue

Replacing leaking gas tank on 2004. The tank I purchased is clean and looks nice. I have a concern with a small hole at the top. Is there a problem? Can I hot weld it or seal it with a gas resistant sealant? Not sure it leaks. No staining on tank.
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Old May 19, 2026 | 10:43 PM
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Moved to C5 Tech for discussion.
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Old Yesterday | 12:14 AM
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Where did that tank you bought come from? Can't send it back or get it replaced?

You could probably seal it, use something like JB Weld epoxy putty.
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Old Yesterday | 06:53 AM
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That would be a hell no for me.
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Old Yesterday | 07:28 AM
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The only way to really fix this is to plastic weld it. Even then you had better be good at it.

I would return it or get a better tank. The time it takes to pull a tank is not worth risking on a patch that likely not work long term.
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Old Yesterday | 08:30 AM
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Originally Posted by hyperv6
The only way to really fix this is to plastic weld it. Even then you had better be good at it.

I would return it or get a better tank. The time it takes to pull a tank is not worth risking on a patch that likely not work long term.
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Old Yesterday | 09:21 AM
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There is a 2 part product produced for aviation fuel tanks. I used some once on a race car bladder and it worked well. Check an aviation parts place like Aircraft Spruce. I don't think it is meant for large areas.
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Old Yesterday | 12:08 PM
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Originally Posted by vetteman2004
Replacing leaking gas tank on 2004. The tank I purchased is clean and looks nice. I have a concern with a small hole at the top. Is there a problem? Can I hot weld it or seal it with a gas resistant sealant? Not sure it leaks. No staining on tank.
If i see that correctly that is not a small hole.
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Old Yesterday | 05:17 PM
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That tank looks like it was in a collision. Don't use it.
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Old Today | 03:09 PM
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For anyone who has not handled one of our tanks, they are very thick multi-layered plastic. So either that is a surface imperfection and no leak, or a fairly serious impact has occurred which would make me question it's use. If this is at the top and all else is without issue then I concur with chasing the aircraft repair which I have also looked up and saved once before.... The actual product.... But for the life of me I cannot find it currently. One to ask would be @Mr. Black for this specialty.

Other than that.... EFF the 03/04 tanks.... If I had to repair or replace one I'd gut the whole system and convert to the prior style and hose routing. 97/98 was one setup. 99 was it's own thing. 00 to early 03 was another. All of those are still the low mount pump and hat etc, just slight differences in crossover tubes which does not matter. More of a quiz detail than an impactful fact.
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