Question about 1991 Jeep Wrangler

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1991 jeep wrangler gas leak

I have a gas leak from my gas line going into the gas tank on my Jeep. I have removed the shield plate and gas tank to take off the worn out line but I am not sure how to get them out. I don't have a manual and I am stumped. . .

any ideas?

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  • Anonymous Aug 22, 2008

    I have a 1991 Jeep Wrangler 4.0 and fuel is leaking from what appears to be the top of the fuel tank. I plan on dropping the tank on 08-22-08 I will report what I find to be the source of the leak. If anyone has an answer please respond. Thanks!

  • Anonymous Sep 25, 2008

    1994 Jeep Wrangler Fuel leak 130K miles

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  • Master
  • 1,498 Answers

Hello everyone,l

For those of you who haven't started removing the gas tank, I'll start from the beginning.
You will need a 1/2" socket, ratchet, extensions, flat head, needle nose, floor jack, rag, broomstick,. A creeper will make this easier. Depending on your dimensions and the height of the frame on your particular vehicle, you may be able to use it without jacking the vehicle up..

  • Disconnect the negative battery terminal
  • If your engine is fuel injected, you need to relieve the line pressure. This is done from the injector rack on top of the engine. About the center of the rack you will find what looks like a filler valve on your tire, only thicker. The fuel line can maintain over 40 P.S.I. pressure even with key off. Place a rag over the pressure relief valve. Use the corner of a screwdriver to poke the center core through the rag. A second or two should do it.
  • Place a floor jack under the gas tank shield, jack it up until snug.
  • Disconnect the rear exhaust hanger.
  • Loosen and remove the three shield nuts above the rear end
  • Remove the plastic shield from beneath the left rear corner. Two plastic anchors hold it on. Disengage them by pulling the center plug out about 1/2". This will expose the hoses connecting the tank to the body.
  • Loosen the hose clamps
  • If you can get them to twist, try and get them off.
  • Rear nuts next. Loosen and remove all but the center one.
  • Make sure the jack is centered and snug
  • Remove the last nut. The tank isn't going to DROP. It will kind of lean, and jam against the exhaust.
  • Insert the broom stick into the exhaust pipe.
  • Push and hold it to the right, slowly let the jack down. Stop if it hangs up and work it free.
  • When its down far enough to access the top of the tank, disconnect the plug, loosen thew hose clamps, remove the hoses, separate the vent hoses at the 'T' connector.
  • Lower it the rest of the way
  • The tank can now be separated from the shield.
If you were experiencing a line leak, the top of the tank is where you'll find it. Inspect hoses, gaskets and connections

Posted on Nov 20, 2008

Jeep has a recall on 87 thru 94 gas leaks. go to http://www.automotix.net/autorepair/recalls/jeep-wrangler/1994/

Posted on Aug 30, 2008

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2 Answers

My 1991 wrangler the fuel gauge is pass full line .is the gauge bad or the fuel level in the tank?


Hello
The porblem under discussion here is not related with my expertise. Please get helped from any other. OK.

Dec 13, 2011 | 1991 Jeep Wrangler

Tip

Wrangler fuel pump problem? Dropping the gas tank made easy.


Fuel pump problems can be a real problem on a Wrangler. They are a Pain to get to.

The fuel pump in a Fuel Injected Wrangler is in the gas tank. The gas tank must be removed to gain access.

This procedure will help you get through it.

You will need a 1/2" socket, ratchet, extensions, flat head, needle nose, floor jack, rag, broomstick,. A creeper will make this easier. Depending on your dimensions and the height of the frame on your particular vehicle, you may be able to use it without jacking the vehicle up.

A word of caution. You're going to be working with a tank of gasoline. Stay aware of that. Wear safety glasses. DON'T SMOKE!! Be safe.

Now, lets get started.
  • Disconnect the negative battery terminal
  • Relieve the pressure in the fuel line.This is done from the injector rack on top of the engine. About the center of the rack you will find what looks like a filler valve on your tire, only thicker. The fuel line can maintain over 40 P.S.I. pressure even with key off. Place a rag over the pressure relief valve. This will prevent gas from shooting out the vent. Use the corner of a screwdriver to poke the center core through the rag. A second or two should do it. Make sure all pressure is relieved.
  • Place a floor jack under the gas tank shield, jack it up until snug.
  • Disconnect the rear exhaust hanger.
  • Loosen and remove the three shield nuts above the rear end
  • Remove the plastic shield from beneath the left rear corner. Two plastic anchors hold it on. Disengage them by pulling the center plug out about 1/2". This will expose the hoses connecting the tank to the body.
  • Loosen the hose clamps
  • If you can get them to twist, try and get them off.
  • Rear nuts next. Loosen and remove all but the center one.
  • Make sure the jack is centered and snug
  • Remove the last nut. The tank isn't going to DROP. It will kind of lean, and jam against the exhaust.
  • Insert the broom stick into the exhaust pipe.
  • Push and hold it to the right, slowly let the jack down. Stop if it hangs up and work it free.
  • When its down far enough to access the top of the tank, disconnect the plug, loosen thew hose clamps, remove the hoses, separate the vent hoses at the 'T' connector.
  • Lower it the rest of the way
  • The tank can now be separated from the shield.
The fuel pump / gauge sender assembly is located top dead center of the tank. Eight bolts hold it on. Remove them and carefully extract the assembly.

Reverse this procedure to to reinstall the tank.

Have fun Jeepsters
Mike

on Nov 20, 2008 | 1991 Jeep Wrangler

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Since it is likely that you have the inline 6 cylinder 4.0, the pump is most likely inside the tank.

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1 Answer

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