Gas leak

NCMau · Jan 2, 2015

Can JB Weld be successfully used to fix a small leak in a gas tank, or is there beside welding, a better product available?

SPIKER · Jan 2, 2015

There are some two part putties that are better, autoparts stores have them. There is a other product that is similar to silicone but drys hard. I forget the name of it but it is in a red & yellow tube in the epoxy area & states gas tanks on it.

Mark

SCWOOD · Jan 2, 2015

SPIKER said:
There are some two part putties that are better, autoparts stores have them. There is a other product that is similar to silicone but drys hard. I forget the name of it but it is in a red & yellow tube in the epoxy area & states gas tanks on it.

Mark

SealAll fixed a plastic gas tank on a generator with it!

franklin2 · Jan 2, 2015

Seal-All is good stuff. A plastic tank is tough to fix though. A lot of puttys and sealers don't like to stick to it. Sometimes a soldering iron will melt a crack back together.

SCWOOD · Jan 3, 2015

franklin2 said:
Seal-All is good stuff. A plastic tank is tough to fix though. A lot of puttys and sealers don't like to stick to it. Sometimes a soldering iron will melt a crack back together.

The rubber piece were the cut off goes into the tank was cracked, not the tank! I fixed it for my uncle, he didn't want to spend $25.00 on a piece of rubber & plastic cut off!

skyhook · Jan 3, 2015

NCMau said:
Can JB Weld be successfully used to fix a small leak in a gas tank, or is there beside welding, a better product available?

Yes it can, there are different types of JB weld also.

NCMau · Jan 3, 2015

Thank you all for the inputs. I'm more educated now!

muddstopper · Jan 3, 2015

Plastic tank or metal? I poked a piece of 1/2in rebar thru my tn75 fuel tank once. I had already replaced the tank before and I didnt like the thoughts of buying yet another. I went to the scrap yard and cut off a piece from a plastic car gas tank. I then took a large soldiering iron and started just heating around the hole until it turned shiny and sticky. I then would push the piece of plastic into the hole with the hot soldering iron. I was able to compeletly seal up the hole. I used the iron just like a acet torch and the extra piece of plastic was my filler rod. It was slow go, but the tank never leaked. Lots of videos on youtube showing plastic welding.

Jesse masterson · Jan 5, 2015

Id be afraid the gas or fumes would ignite in the tank, a soldering iron and gas fumes don't coincide, not saying it wouldn't work but I wouldn't want to do it, I'd get some jB weld waterweld, it's impervious to gas or diesel and works pretty good, bound to be safer than anything with heat!