Gas smell in air vents

[ksracing71]

This morning while driving with the heat on, I had a really bad gas smell come thru the air vents. This only happened while sitting at a stoplight. After pulling in a parking lot and popping the hood, I didn't smell gas in the engine compartment. Anyone heve/had this poblem before? It's a 2001 by the way. Thanks for the advice.

[65comet]

Unless it happens again, I would guess it is unburned gas from another vehicle coming out of their exhaust or another vehicle had a leaky gas tank and was previously stopped right where you stopped. If you had a leak, you would smell it later.

[ksracing71]

it's definitely my truck. But I don't see or smell leaks while under the hood looking for it.

[Davescort97]

Check the fuel pressure regulator at the fuel rail. Also, check the connections to the fuel filter which is on the firewall just even with the driver facing head on.

[danielsatur]

Was your truck at normal engine temp, or was it still cold?
Don't forget about the EVAP system!