[Gen3owner]

I have a 2006 3500 4x4 qc and I smell fuel while the truck is running. I have checked the injector lines (blue clips) all are tight. I have checked lines from the tank forward and there is no obvious leak anywhere. I even had the dealer look at it when I had it serviced(not sure how much attention they gave it) There is no smell before starting, with the key on(not running) or a min( or so) after it's shut off- only when running!
Any thoughts? Thanks in advance!

 

[michridr69]

i have no idea, i smell it to every morning, maybe someone else knows?

 

[dieseljay74]

same here....I thought it was possibly the v-band clamp holding the downpipe to the turbo leaking but not it. I think when it gets cold you are smelling more unburnt fuel due to the overfueling the engine does to compensate for the cold weather.

 

[exryan]

clean your concrete and let it idle for a while and keep checking for any drips.

I had a problem with a fuel filter o-ring that developed a very small crack and slowly dripped when the lift pump pressured up, but otherwise no smell when off. it would be worth checking. the wix replacements o-ring (o'Reileys) was much larger and sealed better. fixed my problem

hope you figure it out