Gas odor - need some diagnostic help!

[Gingerbloke]

I dont know if I knocked something loose playing in the snow or what - but I now have a fairly strong gas smell coming in through my vents when running my heater. I don't seem to notice it as much with just the fan on. It is strongest when I am stopped, and goes away almost entirely when moving. I have not seen fuel pooling on my garage floor, nor have I seen anything loose under the hood, or noticably broken or loose underneath. Granted, the water and muck from the melting snow on my garage floor has hampered my inspection efforts a bit...

Exhaust leak? Fuel leak?

I am at a loss...

Thanks in advance!
JT

[cbxterra]

something you have to track down quick. fuel leaks are dangerous [fire hazard]. It should be easy to see [smell] if you crawl underneath. wherever you see the pool- there's the problem.

[Gingerbloke]

No fuel pooling yet...and I only smell it when its running. I pride myself in being able to troubleshoot almost anything and fix it, but this has me stumped right now.

[Gingerbloke]

Starting to wonder if it isn't just running rich... Replaced the plugs, wires, cap and rotor today (that #6 plug can suck a fart outta duck's butt) and had the battery disconnected the whole time - 45 mins or so. Was hoping to reset the ECU by doing this. Also plugged the hole in my muffler with epoxy putty, thinking I was getting exhaust in the cabin. Started the truck - no gas smell. drove around a little, no smell. Drove to work, about 11 miles at 60ish mph, truck smelled like gas when I stopped. WTF over?