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Discussion Starter · #1 ·
I use my 06 TJ as a daily driver. Nothing more than 50 miles in a day. I have noticed that sometimes when driving up hill there is a slight, but distinct smell of gas. I have looked under the hood, and don't see any leaks. This does cause for concern. I know vague information. But, definitely not something that I want to play around with.
 

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Probably a cracked vent line, rubber drys out.
X2.

I smelled gasoline after fill ups and for several miles afterwards. Dropped the tank and found that the hoses for both roll over valves were shot and leaking all over.
 

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Do Not use Ethanol in your Vehicles! Ethanol does not play well with synthetic seals, O-rings, gaskets, or hoses. It literally destroys them. If Ethanol has been used in your Jeep expect these things to start leaking.
 

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Do Not use Ethanol in your Vehicles! Ethanol does not play well with synthetic seals, O-rings, gaskets, or hoses. It literally destroys them. If Ethanol has been used in your Jeep expect these things to start leaking.
Glad to hear as i use ethanol free gas in my TJ.
 

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Is it definitely a gasoline smell or that odor kind of like rotten eggs? That might mean your
catalytic converter is going out on you.


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Discussion Starter · #10 ·
Not after fill ups. Not rotten egg smell either. Just a faint smell when going up hill mostly. I think that I am just going to take it to a mechanic.

Though when filling it up all the way, the gas nozzle does not automatically shut off. So the few times that I did fill it up all of the way, careful not to over flow.
 

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Not after fill ups. Not rotten egg smell either. Just a faint smell when going up hill mostly. I think that I am just going to take it to a mechanic.

Though when filling it up all the way, the gas nozzle does not automatically shut off. So the few times that I did fill it up all of the way, careful not to over flow.
If the mechanic ends up dropping your gas tank to find the leak, you could have him spend a few minutes fixing your inlet poppet valve so that it stops spewing gas when you fill it up. If he doesn't have to drop the tank, then you can just add the GM flapper valve to the filler hose to stop it from spewing gas.

See this link for the full fix that requires dropping the tank and reworking the poppet valve:
https://www.youtube.com/watch?v=V4DXHsacHB4&t=5s

You can search this forum for information on the GM flapper valve fix. But, this is not related to your gas smell problem, just might be a good time to kill two birds with one stone.
 

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Do Not use Ethanol in your Vehicles! Ethanol does not play well with synthetic seals, O-rings, gaskets, or hoses. It literally destroys them. If Ethanol has been used in your Jeep expect these things to start leaking.
That's easier saI'd than doing in states where it's mandated, like Az.
 
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