[lbpd719]

here's a question (and kind of how I fixed my version of the same problem. How are all of your filler neck seals, including your cap. Do you get a large inrush of air when you remove your cap, and is your cab to filler neck seal in good shape.

When I first got my truck, I went through the same hunt. after sealing up the rubber on the cab and changing the cap, problem was pretty much solved. I can still smell a little fuel on occasion, but not like I could before..

Good Luck