drip drip drip gas leak when tank is 3/4s or higher..... - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-19-2005, 02:10 PM   #1
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Default drip drip drip gas leak when tank is 3/4s or higher.....

I have an gas leak comming from the upper gas tank somewhere it has an drip drip drip leak that I dont know where its comming from on the tank mabey? the leak is under the car on the right side its by a few lines i belive dunno if there gas lines but it cant be a gas line cause it only leaks when i fill it 3/4'* or higher neone else have a gas tank problem like this?
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Old 10-19-2005, 02:14 PM   #2
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Pull the tank and replace if necessary. Most likely you have a hole.
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Old 10-19-2005, 05:43 PM   #3
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I had an issue similar in my 98 Lumina LTZ. There was a hole on top of the gas tank that caused it to leak. I suggest dropping and replacing if necessary.
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Old 10-19-2005, 11:50 PM   #4
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That costs $$$$$$$$$ can I just epoxy putty it up?
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Old 10-20-2005, 10:52 AM   #5
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If the hole'* small, epoxy will work, but welding is better (of course, make sure the tank is completely empty and fill it with water and flush it several times before striking an arc.) there is a specific epoxy sold for sealing gas tanks-can't remember the name.

I think it'* more likely the rubber O-ring that seals the sender unit and fuel pump assembly into the tank has deteriorated. If you're going to take the tank out anyway, I'd replace that.

If you do, make sure to get the factory part that has the three metal rings on the bottom. don't use the typical rubber O-ring the parts puppies sell. You just can't get the damned things to seal without a lot of work.
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Old 10-20-2005, 03:02 PM   #6
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New gas tank is $90-$100. I sure wouldn't risk welding a hole for that kind of money.
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Old 10-20-2005, 03:10 PM   #7
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Quote:
Originally Posted by tumbleweed
New gas tank is $90-$100. I sure wouldn't risk welding a hole for that kind of money.
Agreed...the Kaboom possibility isn't worth it.

I'd roll with epoxy or new...if it'* not the seal
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Old 10-20-2005, 05:20 PM   #8
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I am think you should fix it the correct way. This why you won't have deal with it later. Welding may work ,but it to easy to cause big fire.
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Old 10-20-2005, 10:57 PM   #9
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Quote:
Originally Posted by Masterbm
I am think you should fix it the correct way. This why you won't have deal with it later. Welding may work ,but it to easy to cause big fire.
defintally have it fixed the right way, its gasoline, its expensive in itself, and very dangerous, you do not want a faulty leaky fuel system in the least, have it fixed before somethign as simple as static electricity sends your car sky high..or worse.
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Old 10-21-2005, 06:18 AM   #10
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My 97 SE had an upper gas tank leak too, it was under extended warranty at the time, so my dealer replaced it. They had to order a new tank, I had to leave the car with them an extra day or two while they waited for it to arrive. If the tank cost is really only $100, just throw a new tank at it, no sense blowing yourself up trying to save $100.
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