What does it mean when....

[Nay-Sayer]

You can smell gas fumes when your truck is running?

[Harbinger]

I've heard of some rubber fuel lines going bad somewhere under the body near the fuel pump. There was a thread on this some time ago, but I'm not sure what happend to it.

 

Outside of that I don't know.

[Precise1]

I'm assuming you mean normal driving when warmed up ? Maybe when stopped at a light ? Not rich exhaust when you first start it ? Some detail is usually helpful.

Ok, you smell gas. That would mean you have a gas leak. It could be at the seal for the fuel pump its self (in the tank, there is a removable port in the floor of the cargo area under the carpet), the metal gas line into the engine bay, the flex line to and from the fuel filter, and lastly the lines around the fuel rails themselves. You will have to look, smell and attempt to isolate where the smell is comming from. Outside, underneath or under the hood is required.

 

B

[Nay-Sayer]

I smell gas from about the moment I start it until I turn it off.....

[jj big shoe]

I smell gas from about the moment I start it until I turn it off.....

Then I'd start looking in the engine bay. It's prolly leaking out somewhere once the line is pressurized and the fumes are coming thru the fresh air vents. With the engine off and cold clean what you can around the fuel supply system, then start 'er up and poke around with a clean, dry rag or paper towel. You'll find it eventually.

 

Good luck (and try not to catch on fire).

[k9sar]

there is a known problem with the VG30 engines where the little fuel line connecting the injector rails gets rigid and doesn't seal well, especially in the cold. It's about 4 inches long and on the top back of the engine under the intake.