Smell gas

[Phil921]

This exact thing happens to me every time I’m in Moab. Definitely a raw fuel smell. Usually, I do tough trails with lots of steep inclines but this last trip I stayed on real easy trails that were basically bumpy roads. I would fill the fuel tank in the morning then then head out to a trail. Every day I’d get an incredibly strong fuel smell in the cabin right around the ¾ of a tank mark. It was so strong that it’d give me a headache. On one of the days, I got out to try and locate the smell. I looked all around the Jeep and the smell was coming from underneath at the rear end. I suspect it has something to do with the EVAP system.

• It was right around 100 degrees every day
• When this happens, it last for about an hour
• The only aftermarket skid plate I have is under the muffler
• I never overfill the tank. I always stop when the pump clicks off
• I’ve never had a check engine light
• This only happens at low speeds in 4H Part-Time, or 4 Low

On one of the days while I could smell the fuel, I stopped and removed the fuel cap to see if there was excess pressure in the tank. When I removed the cap there was a constant stream of gas spraying down from the top of the filler neck a few inches in. There’s an EVAP line that connects to the filler neck right in that location (I’ll include a picture). By the time I went and grabbed my phone to get a video, the fuel spray had almost stopped, but I did record the very end of it. I pulled the cap off the next two days while smelling fuel but didn’t see that spray, so I’m not sure if it’s related. I’d love to figure this out because it’s incredibly annoying.View attachment 38923

Thanks RadMan ... I did the exact same thing with the gas cap at the halfway mark on Pikes Peak and also experienced an absolutely inordinate amount of pressure equalization; but did not specifically notice the spray.

Have you had it in for Service? Any feedback in that regard?

 

[RadMan]

Thanks RadMan ... I did the exact same thing with the gas cap at the halfway mark on Pikes Peak and also experienced an absolutely inordinate amount of pressure equalization; but did not specifically notice the spray.

Have you had it in for Service? Any feedback in that regard?

I haven't had it in for service. My dealer is an hour away from me, so I did call them and they said that they would have to replicate the problem to diagnose it. Where it's only happened to me in Moab, I don't thinks it's likely that they could replicate it.

 

[Earl 392]

I haven't had it in for service. My dealer is an hour away from me, so I did call them and they said that they would have to replicate the problem to diagnose it. Where it's only happened to me in Moab, I don't thinks it's likely that they could replicate it.

Thanks again jeep

 

[prodriquez]

I’ve had it a few times… but if Jeep can’t replicate it in a parking lot they won’t help. Personally, I'm still way more concerned about it occasionally stalling on prolonged declines

 

[SunsetHill]

I never overfill the tank. I always stop when the pump clicks off

That's all I can think of. When reading up on my 2024 392, somewhere I read to not overfill at the gas pump but to stop at the first click-off of the handle, otherwise one consequence is smelling gasoline inside the cabin. Odd as that sounds to me.

But, you're not overfilling.

 

[prodriquez]

That's all I can think of. When reading up on my 2024 392, somewhere I read to not overfill at the gas pump but to stop at the first click-off of the handle, otherwise one consequence is smelling gasoline inside the cabin. Odd as that sounds to me.

But, you're not overfilling.

Nope, not the problem

 

[HankEvans]

Hello, I started a new thread yesterday on this topic, but adding to this one, I have same issue.

I've been getting fuel vapor into the cabin while doing serious off-roading, (Rubicon other trails around Lake Tahoe), mostly after going uphill with sustained high RPMs, getting boiling noise and even fuel coming out of the vent hole when you remove the fuel cap, the vapor smell starts about 5 min after that, and continues until you drive on the highway. The temps outside where in the high 80's above 6000ft. I'm running Magnaflow Rock Crawling exhaust with Artec skid plate, I've talked with other people with this exhaust and they are not having the issue, so I believe it has something to do with the Evap system. I removed and inspected the Caninster, and I don't see any cracks or anything physically obvious. I believe the canister is venting under this extreme fuel heat / pressure issue as the smell is worse in the rear passenger side. I have heard of other people with this problem running stock exhaust, but I've not seen anyone find a problem. No codes, and I do not overfill the tank, I stop at the first click.

 

[Phistry392]

I get a gas smell inside of mine. No overfilling or off road, just normal use. Anyone else? Less than 1,000 miles.

 

[DarkHorse8]

Not driving it hard enough to burn all the fuel during combustion.

 

[EBYCREEK]

I've had the occasional gas smell for 5 years now. Hopefully somebody will figure it out.

 

[Phistry392]

I’m glad it’s not just me I guess. lol. I don’t want to be leaking $5 per gallon gas.