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Old 03-20-2015, 09:35 PM
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Need help with bad fuel smell

I have noticed the past few days that the smell of fuel is really bad. The smell is there all the time. I don't see anywhere that it's leaking. Do you have any ideas on what I could check to find out where the smell is coming from.

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Old 03-20-2015, 10:24 PM   #2
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That is a serious issue as a leaking injector can turn into a non fire

Carry a fire extinguisher and find the leak or bring hotdogs and march mellows for roasting

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Old 03-20-2015, 10:42 PM   #3
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I just had the same thing with no visible leaks. I dropped the fuel tank and found the fuel pressure regulator on top of the fuel pump was leaking.i could smell it when I was driving with the window down and when I walked behind it New one was $85
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Old 03-21-2015, 07:42 AM
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I just had the same thing with no visible leaks. I dropped the fuel tank and found the fuel pressure regulator on top of the fuel pump was leaking.i could smell it when I was driving with the window down and when I walked behind it New one was $85
I have noticed one thing, when I first start my jeep, the fuel hand goes crazy, did yours also do this
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Old 03-21-2015, 02:36 PM   #5
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I have noticed one thing, when I first start my jeep, the fuel hand goes crazy, did yours also do this
No I didn't have any issues with the gauge.
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Old 03-21-2015, 02:53 PM   #6
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Originally Posted by ladean85 View Post

I have noticed one thing, when I first start my jeep, the fuel hand goes crazy, did yours also do this
That's likely your sending unit. I had those same symptoms and ended up replacing the entire fuel pump assembly. This includes the pump, pressure regulator, and sending init.
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Old 03-21-2015, 09:33 PM
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I have noticed the past few days that the smell of fuel is really bad. The smell is there all the time. I don't see anywhere that it's leaking. Do you have any ideas on what I could check to find out where the smell is coming from.
Ok, let me start by saying thanks for all the help. I'm going to start from the beginning with the problems and will probably buy a new pump assembly but I want to see what others think first. When I first try to start the jeep, I have to crank it for 10 seconds or so with the throttle mashed all the way before it will start, then the fuel gauge goes crazy. After it's running is when you can smell the fuel, it's the worst behind the doors. Thanks for all the help
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Old 03-22-2015, 10:53 PM   #8
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The next time you go to start it just key on but don't crank it. Wait the 10 seconds and then crank it over and see if it starts faster. Does it start right up after its warmed up?
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Old 03-22-2015, 10:57 PM   #9
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It could also be nothing more than a bad 02 sensor fooling the engine computer into setting the fuel mixture full rich. Especially likely if the engine performance has also fallen off.
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Old 04-11-2015, 07:59 PM   #10
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It could also be nothing more than a bad 02 sensor fooling the engine computer into setting the fuel mixture full rich. Especially likely if the engine performance has also fallen off.
I am having the same issue... Is there a way to check the O2 sensor other then replacing it with a new one?
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Old 04-11-2015, 08:21 PM   #11
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A meter and a propane tour h can check a narrow band o2 sensor

The heat element can also be checked for resistance
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Old 04-12-2015, 01:34 AM   #12
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I am having the same issue... Is there a way to check the O2 sensor other then replacing it with a new one?
Unplug the upstream 02 sensor(s) for a few days and see what happens. If the problem goes away you have a bad 02 sensor.

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