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Plastic fuel tank leak

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Posted November 09, 2015 - 03:12 PM

The plastic fuel tank on my grandsons old WH started leaking around the rubber grommet on the bottom,

the rubber had gotten old and cracked. 


It appears that the PO had a leak problem and  "fixed" it by smearing some kind of epoxy (or something)

around the original grommet.


I replaced the grommet with a new one, but it's still weeping gas......any suggestions?




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#2 Gtractor OFFLINE  


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Posted November 09, 2015 - 03:37 PM

Rough it up some,  clean it real good and slather on more J.B.Weld.  It'll buy you a couple more years. 

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Posted November 09, 2015 - 06:36 PM

Did that have a brass fuel outlet? My John Deere did and they stocked a new bushing for the fuel outlet.
It was a chore getting the new one in but does not leak

Edited by JD DANNELS, November 09, 2015 - 06:37 PM.

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#4 Eric OFFLINE  

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Posted November 09, 2015 - 07:01 PM

There is a product we call 8802 in the service it is two parts and when dry has a rubber like texture. There is a non fuel permeable variety that is perfect t for this application, we repaired fuel cells after bullet strikes with this material and it lasts forever. Look up two part epoxys that are non fuel permeable and soft to the touch when dry this would be your best bet, if its good enough for the navy it should be great for your use.
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Posted November 10, 2015 - 07:51 AM

I used a product called  "Seals All" on my plastic gas tanks. It's specifically designed to hold up under gas and oil.

If it keeps leaking with the rubber grommet, I would find me a 1/4" nipple threaded brass fitting that just fits in your hole. Heat the fitting slightly then gently use it to thread the hole. Then back it out, put some sealant on it and be done with it. I did this on my Sears where the plastic nipple gas broke off the tank.

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