Question about 1998 Jeep Grand Cherokee

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Engine light on smell fuel gas dripping under fuel tank

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Engine light on can be a lot of different things. But first, fid the gas leak! The fuel line is a combination of steel and in some places rubber lines. It is likely that the leak is in the rubber part of the line. The tank is usually protected under the vehicle by a steel plate that first must be removed on Jeeps. I don't know what part of the car the gas is leaking from, but if it near the tank at the back, its is probably where the line comes from the tank or where the filler pipe enters the tank. You will just have to get under the vehicle with a flashlight and look to see exactly where the gas is coming from. You may have to remove the bolts holding the tank cover on, it is heavy, so you might want to have a floor jack under it with a 2 by 2 foot piece of plywood between the steel plate and the jack. That way you can lower it to the ground safely. Do the same thing with the tank. You will have to disconnect the fuel filler hose before you can let the tank down. There is a clamp at the tank that hold it on. Look for leaks and replace the hose that is leaking. This is a critical issue. Gas and hot exhaust pipes can set this off into an inferno. Now back to the engine light on. A gas leak can cause the light on because it may show up as an evaporative system leak. It's like leaving the gas cap off. If you want a better idea of why the light is on, drop by an Autozone or Advance auto store and they will usually hook it up to their code scanner for free. Without the code readout you have to just guess at the cause for the light.

Posted on Oct 13, 2010

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your car may not be burning off all the fuel or you are leaking. just because you dont see it on the floor doesnt mean that your not leaking. because its hot under there your evaporating faster than you drip. check your lines starting at tank. check under hood where it connects to injection system.
run the engine and smell exhaust for fuel. put your hand at the tip while engine is cold running. if you get fuel go get a tune up. if smell it while driving you have a leak. i would need more info on the car. like has it been running a little less normal?

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hat you have is an unsealed fuel tank, could be the the cap, vacuum line, find the fuel leak and repair it should fix the problem

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Look for fuel leaks in the engine bay or back by the tank where you fill up the the tank. A little bit of gas will go a long way so if you had spilled a little while removing the nozel at the gas station the filler neck will disperse of it, sometimes it gathers on the inside of the fender, and causing for a smell that may not be an issue. On the other hand if you notice the smell under the hood you may have a leaking fuel line, check to see if anyone has replaced the fuel filter recently sometimes the technician does not tighten the lines securely causing a little fuel leak. other times its just a little fuel spray from not releasing the pressure before removing the filter may have sprayed the fuel on the car onto maybe the insulation. One thing to do is look under the car while it is running myabe after filling it up to check for leaks. If your notice a drip while the A/C is running dont be alarmed as this is the condensation dripping off as it is supposed to.

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when you look for a fuel leak, make sure the engine is running. the fuel lines will be pressurized and you are more likely to spot the leak. if you see fuel squirting, be careful since it under a lot of pressure. it might look like a single strand of a spider web. also, you should wear eye protection since gas in the eye would be a bad thing. needless to say, don't light a match or lighter for light to find the fuel leak. since gas is explosive, you probably should take it to a shop if you can't fix it. it could be dangerous if gas drips on a hot part. fuel vapors are explosive too.

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