Need Help - Smell Gas

[rd3100]

Hi everyone,

New to the forum and someone suggested I ask the folks here about a mechanical issue I'm having. I have a 2007 LC with 193k miles. Yesterday, I took the family on a trip about 60 miles. Vehicle ran fine with no issues with the AC blasting. While driving up the mountain, I started to smell gas from the driver side, where I was seated. It was fairly strong. I pulled over immediately, shut the truck off and looked under the hood, under the truck, etc....looking for a gas leak. Nothing was visible. I checked under the hood as well.

I tried to start the truck again a couple of minutes later but it would not start....sounded like an issued with fuel not getting to the engine. About 15 minutes later, I tried again after the smell of gas went away. The truck started and I drove home without issue.

I will be having the truck towed to a mechanic tomorrow morning but wondering if anyone can give some ideas on what can be going on.

Any help is appreciated. Thank you.

 

[Jerzywerzy5]

Gas tank building excessive pressure & fuel smell. Dangerous for sure! Why does this happen?

DANGEROUS GAS PRESSURE BUILD UP IN GAS TANK! Why? What's going on? How can we fix this? Edited 3/15/25: Since first posting this thread. I've corrected many boiling fuel. By working in this order: Coolant system if first on the list, must be operating as designed. Which radiator fins cleaning...

forum.ih8mud.com

 

[FxFormat]

Sounds like vapor lock, might need a new charcoal canister

 

[rd3100]

Gas tank building excessive pressure & fuel smell. Dangerous for sure! Why does this happen?

DANGEROUS GAS PRESSURE BUILD UP IN GAS TANK! Why? What's going on? How can we fix this? Edited 3/15/25: Since first posting this thread. I've corrected many boiling fuel. By working in this order: Coolant system if first on the list, must be operating as designed. Which radiator fins cleaning...

forum.ih8mud.com

Wow, a lot of good info. I just read it all. I'm no mechanic but gong to bring up these points with him tomorrow.

I read about the AC. Here is what's interesting. My AC was. not working because of a lack. So a mechanic ended up cutting the silver pipe under the hood that goes to the rear AC. So I basically only now have AC in the front....the rear vent blow but no AC. He cut it and then welded it shut. Wondering if that is causing an issue with the over heating.

 

[rd3100]

Sounds like vapor lock, might need a new charcoal canister

Thank you very much. I'll mention this as well.

 

[Njck22]

See what he has to say first if he has looked at it. If you tell a mechanic you expect something to need to be replaced, chances are he will do it because you've already sold yourself on it being necessary. But it definitely sounds like vapor lock.

 

[rd3100]

See what he has to say first if he has looked at it. If you tell a mechanic you expect something to need to be replaced, chances are he will do it because you've already sold yourself on it being necessary. But it definitely sounds like vapor lock.

Will do. I won't mention anything until he diagnosis' it. You all are awesome. Thank you for the information. I will call him tomorrow. Likely will get me in on Tuesday so I will report back. Thank you again!

 

[FxFormat]

You'd have to be able to replicate the problem for them to try and fix it. It'll be tough to just describe what you experienced and when you bring the truck there, everything runs fine. A lot of 06-07 have bad batches of fuel pump related issues, most of us replaced the oem fuel pump with a Denso unit from a sequoia. I did that and took my truck to high elevation in some nasty heat and it was fine. Lots of 06-07 owners have reported problem starting and excessive fuel smell coming out of the truck at high elevation or really hot temps. Lot of work to chase it down.