Grubee tank leaking from mounting bracket screw.

[Al.Fisherman]

The only real way to fix that kind of leak is to: A. drain the tank, flush it with water REALLY good, let it sit open to air out for a few days and remove the paint that's around the leaking stud and clean the bare metal REALLY good.
Braze the hole closed with brass brazing rod with flux and a torch.
OR: B. buy a new tank.
the studs are just brazed to holes in the tank and after awhile, if the original brazing was not done right or if it was too thin, the brazing will crack and a fuel leak will develop.

j.b. weld will work as a temporay fix, but if gas gets to the j.b. weld, it will soften it and eat it away over time. J.b. weld is only epoxy and is not a permanent solution. i know, some people will argue that it will work fine and that gas will not affect it....but, i have been down this road with j.b. weld before, and all j.b. weld is, is a bandaid.
you can probably pick up a brand new tank for $10.00-$20.00....why bother messing around trying to fix that one, only to have it start leaking again later?

I'll have to agree here...that is one place you don't want to leak in the future. Now the part I don't agree with is the water part...first you should not put water in a fuel tank, so what do you do. A tank can sit for a very long time and still have fumes that can ignite, so here is a guaranteed solution. Take a hose that you can run from the tailpipe of a gas burner and into the tank. When the tank is warm, and even if there is a little liquid in it, the fuel liquid and fumes are dead. Have done auto tanks this way and have never had so much as a poof when I put the flame close to the filler hole.

 

[Lazieboy]

Scylacone has worked for 3 days now. fingers are crossed. put it around the screw base and when the nut tightens down on bracket sylacons flattens out around the damaged area. so far is working.

 

[motorpsycho]

I'll have to agree here...that is one place you don't want to leak in the future. Now the part I don't agree with is the water part...first you should not put water in a fuel tank, so what do you do. A tank can sit for a very long time and still have fumes that can ignite, so here is a guaranteed solution. Take a hose that you can run from the tailpipe of a gas burner and into the tank. When the tank is warm, and even if there is a little liquid in it, the fuel liquid and fumes are dead. Have done auto tanks this way and have never had so much as a poof when I put the flame close to the filler hole.

I'll have to agree with you, but i have done it with water before on motorcycle gas tanks and i have never had a problem.
but you are right, fumes can hang around inside the tank even after it is flushed with water.