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Old 01-24-2003, 04:21 PM
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Post leaky fuel tank

this really isnt a hot rod question but i dont know of a better place to go for advice. ive got a '95 jeep and i gassed her up today. i just let it take as much as it wanted. i ended up with about 26 gallons in a 23 gal tank. it was leaking off the top of the tank. i siphoned a cuple gallons off and have driven it a bit and the leak is alot less but i am still around the 23 gal mark. well my question do these newer cars have a pressure blow off that it could be comin out or is it more likely the gastet around the fuel pump assy. what do i need to do to prevent this from happining

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Old 01-24-2003, 04:40 PM
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could be several things, most common ts rust throught, unless the tank has been down reacenly a gasket or seal doesnt normaly just start leaking, run most of the gas out and drop the tank other wise its just a guess. GOOD LUCK.
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Old 01-24-2003, 04:44 PM
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i did have to change the fuel pump twice over the summer. i didnt change the gasket because the parts houses in town are crap, and i couldnt go a week without my daily driver. its a plastic tank so ill assume it is the gasket
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Old 01-24-2003, 04:46 PM
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by the top of the tank do you mean aywhere near the filler??? Cuz I know that sometimes the blow out valve pipe (don't remember if that is the right name) somteimes leak... When I worked at shell therer were a good 4 or 5 people who came in and gas started pouring from under the car... on a couple of em the people knew what it was... Dunno if it is the same problem with yours...

Do what toymobile said and drop the tank and inspect it...
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Old 01-24-2003, 04:49 PM
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I could be wrong but I think most newer Jeep Cherokees and Grand Cherokees have plastic gas tanks so rust usually isn't an issue. You didn't say what Jeep you have. If it was mine I would try lowering the tank to see if it's leaking around the filler neck, pump, or a valve for the EVAP system. Pretty sure Jeep should have an EVAP system by '95. Some of the Jeeps also require an extra deep socket to undue the tank straps, but not all. With a possible gas leak it's better to be safe than sorry.

Ok, scratch that first line. You must have been posting while I was typing.

[ January 24, 2003: Message edited by: dmorris1200 ]</p>
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Old 01-24-2003, 06:20 PM
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dmorris, it sounds like youve worked on my car befor. i have already ruled out the filler neck, that you can get to without lowering the tank, you have pretty much ruled it down to the pump assy. i wish i could drop it but im leaving town in the morn and it has 23 gallons of gas it it. i dam near killed my self when i dropped it with 10 gal in it. i was hopin some one would have an idea other than dropping the tank, the old lady says i cant cut the floor out above it, so i guess ill just be careful how much i put it it. is it normal for an over full tank to leak like that?

thanks for your help
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Old 01-24-2003, 06:30 PM
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It shouldn't leak like that. Probably the gasket, it should be replaced anytime the pump is removed or changed. You also have to make sure the retainer ring is TIGHT. Not sure off hand on yours but a lot of the Jeeps use a plastic ring with ridges to secure the pump. Jeep has a special tool that clamps onto the ring to make it tight. You could probably tap it tight with a flat blade screwdriver against the ridges and light blows to the screwdriver with a hammer. Get the tank as empty as you can and maybe try a good quality hydrolic floor jack and a small piece of plywood between the jack and the tank to help lower it. I fortunately have the luxury of doing these things on a shop lift. Until you can fix it just don't put too much gas in at once.
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Old 01-24-2003, 06:44 PM
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thanx, i now have a lift i can work on, but only on weekends, i wanted to replace that gasket when i did the pump but they only way to get one in this town was to buy a $600 fuel pump at the dealer. Checker and autozone im coming to find out are a waste of time unless you want plastic hub caps or seat covers. Know where i could order the gasket? and while im thinking of how about a good place to get cheap old hub caps?
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Old 01-24-2003, 06:48 PM
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I can't believe Jeep doesn't sell just the gasket. That sucks! Too bad you weren't in Maine I probably have one of those gaskets stuffed in my tool box at work. You know, those junk drawers that accumulate everything.
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Old 01-24-2003, 06:51 PM
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i call that drawer my storage shed. it sucks living 280 miles from a town of any size for things like that
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Old 01-24-2003, 07:03 PM
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Better you than me friend!
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Old 01-24-2003, 08:07 PM
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Umm will the dealership or autozone order it in (probably tack on a charge to it though)
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