What goop to seal a fuel tank fitting?

[Tim Donahoe]

Yesterday, I re-fixed a Asher hose fitting in the air box of my 1974 Super Beetle. I’ve had the trunk lid open, and when the wife got home she said she smells gas.

I’ve had a very slight fume leak for a while now, and previously replaced all hoses going to and from the tank. I did this about five years ago, and all the hoses have been leak free.

However, a few months ago, I noticed a very slight fuel smell (not enough to waft into the cabin), and I found the culprit—a male vapor nipple, just before the big filler neck. It should have been soldered when the tank was manufactured, and because it wasn’t, it allowed fumes to escape. I used JB Weld putty, and this worked for quite awhile, but now it’s leaking fumes again.

Is there better—fuel resistant—substance I can use that will take care of this issue for good?

Tim
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Let's do the Time Warp again!

Richard O'Brien

[bluebus86]

[shakers73]

You might try this. It is good stuff. Cures hard as a rock and is chemical and fuel resistant.

https://repaintsupply.com/por-15-ppb-por-patch-black-sealer-p3334.html
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shakers73
'74 Super Beetle
'67 Beetle

Where there is no vision, the people perish.

[Tim Donahoe]

Blue, the fitting isn’t loose at all. Thy just didn’t seal it up properly.

David, that product you mentioned looks promising.

I also found a Permatex product—a putty—that says it’s fuelproof.

Tim
_________________
Let's do the Time Warp again!

Richard O'Brien

[Vanillagurilla]

I used jb weld liquid stuff on the sending unit for my old bronco, the pick up and return tubes were spinning on the sending unit so the tank wouldn't pass ca emissions. Jb weld and no problems. I'd scuff the surface really well first.

[Evil Clown]

Marine Tex works the best with gas
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CARRY ON

[AlmostHeavenWV_VW]

JB weld epoxy
Is fuel resistant
Cures hard as a rock
Can be painted
Cheap
Easily purchased
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1973 Standard Beetle
1600DP AK case
Solex 34PICT3 Carb
Bosch DVDA 205AJ Distributor

[slalombuggy]

Seal All is fuel proof and can get into the tiniest of cracks to seal them up. It is flexable so that if there is movement it won't crack.

brad

[74 Thing]

I tried epoxies on the metal nipple of the expansion chamber which had loosened up but it never sealed properly. I finally soldered it and it is leak proof now. Be careful with the fumes though and heat (obviously).