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Gas tank leak

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Isn't there a two part epoxy product that does this?
 
I believe there are a number of external sealants you could use as a temporary patch. One word of caution, don't use any silicone (RTV) products. They aren't suitable for exposure to gasoline.

If the spot is easily accessible, I'd consider draining the tank, cleaning off the surrounding paint near the leak, and using a heavy-duty plumber's soldering iron (and acid flux) to tin the area with lead and cover it with a brass shim-stock patch.
 
Thanks for the replys guys. I did see RTV is no good with gas. I am afraid the tank is quite porous so dont think I will try and solder it. There is one small spot where it was previously sealed that is spongy!!

Will try one of the Permatex products that are OK with gas then look for a replacement tank. Wouldnt be so bad if the rear end didnt have to be dropped. Not many bolts but many years of crud.
 
If you have to drop the tank to do the repair anyway, I'd use an internal coating product instead. I've used tank coatings from Kreem and POR-15. Of the two, I much prefer the POR-15 tank liner kit. (Don't confuse this with POR-15 paint, this is a gasoline compatible tank coating). What I like about the POR kit is it doesn't rely on MEK for the solvent system and it leaves a metallic looking coating in the tank (Basically it looks uncoated when you're done). It leaves a much more original appearance and hasn't discolored with age.
 
youm can drop the tank on a midget without pulling the rear end. least on the 4 i have done

mark
 
I used the POR-15 kit on mine. It was easy to use and works/looks great! I believe they also have a patch kit for repairing larger leaks. I have been using their products for years and never had a problem.
 
6 bolts and the pipes disconnected and the tank is down.
No need to drop the rear end.
I have fiberglassed a tank and it is still holding 1 year later. I have also used a waterbased caulk and a screw to seal a pin hole in a gas tank. It lasted for several months before the car was stripped for parts.

Frank
 
I found a used tank I will put in. First I will use the POR-15 stuff to catch any potential problems. I am just assuming the existing tank is shot. That way I will have my bases covered.

I hear you on not needing to drop the rear end. Thanks to all for the good feedback.
 
and no one even mentioned bubble gum.....

Mark
 
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