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Fuel tank welding perosity. any sealer suggestions?

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bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 ·

#855597
I have two larger fuel line 'outlet' and 'inlets' welded to my fuel tank for future use. However there is a VERY small leak at the weld.

So small, that it takes 24 hrs for a wet patch to appear, and dries up before it even drips or makes a puddle. However in the process, it does make the garage smell like fuel and the area has a wet dampness look to it.

Is there a brush on seal coat that is fuel resistant i can just lather on to do a final seal for what i assume is just perosity in the weld?

any suggestions?

THanks,
Christopher.
(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 ·

#855602
Hi Chris

I think POR15 may make a fuel tank sealer??? or maybe just a fuel tank coating for inside the tank...

its best to braze on fittings onto fuel tanks....
that was normal practice years ago...

hardest part with leaks like that ... they have to be perfectly clean before You can seal them...

You may have to cut it off..???
or fill the tank with water and reweld it..?????

cheers

LEE
- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

OZ Towdster Keen to finish some projects

1,921 posts · joined Dec 2003 ·

#855608
Chris , there are a few different 2 pac putty's that are available and work well , i had a rust hole in one of my old tanks and repaired it in minutes and that was in the bottom and it has not leaked since .
Sorry can't remember the brand but was just purchased at Repco or Autobarn

Andrew
Don't let body work get in the way of real suspension travel

DJB 01 Casual Dubber

35 posts · joined Apr 2009 ·

#855625
Try 3145 silastic - the grey stuff - works like fuel tank sealant, and is very good. But use rubber gloves, cause it sticks like the proverbial.
cheers DJB😎