HELP! Hairline Crack in a Metal Fuel Tank!

A product called 'seal all' sold in hardware stores works very well on gas leaks. It dries flexible and will even seal a FI gas line crack.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's Canadian Off Road Trips Photos: Non members can still view! Jan/06 (More Off Road album links at bottom of the view page)

Your car is leaking raw fuel. IMNSHO, it's a Bad Idea to just repair a tank with something on the market. Either have it done professionally or better yet, replace the tank.

Nan

This is the usual epoxy putty. It's fine for patches on side seams.

Yes, but if you use it, it will leak somewhere else in another week or two. Call a junkyard and see about getting a replacement tank.

--scott

weld it! :rofl:

seriously though just replace it.

Hey Mike...

Look into Moyer Fuel Tank Renu (Google?)

If this a car that you really want to keep, they will hook you up and get your gas tank right. Not to sure on the shipping cost of hazardous material (gasoline) with UPS, or the USPS, but these shipping people are pretty cool. They will let you know what to do and give you an estimate.

Write back you decide to use Moyer!

Good luck, Dave

About the average for that kind of repair.

Yeah, solder. If by some miracle, there's still a good old-fashioned radiator and gas tank repair shop in you area, they can solder the repair. They usually put a layer of expanded metal (leftover radiator core headers, generally) over the crack and flow solder over the entire area, filling in the voids in the expanded metal. The expanded metal acts as a reinforcement to prevent the area from flexing and re-cracking.

As you might guess, this is a process that requires a skilled operator (IOW, "don't try this at home"). The fuel tank will have explosive vapors inside it no matter how well its rinsed and washed, so the repair is usually done with the tank filled 90% full of cold water.

"Oil canning" due to pressure cycling of the tank, or just chassis vibrations when its near empty.

I think the best thing is,get another tank. cuhulin

Weld it up,

empty the fuel remove tank Drop about a golfball size piece of dry ice into the tank, wait a few minutes for the tank to fill with CO2

weld away.

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hey i just wanted to say that it is possible to weld on a gas tank,I myself in amazement watched as one of my companions proceeded to weld on a gas tank!! "HOWEVER!" it is not wise to do if you do not know what you are doing!!