hey, check your gas pump cap...I noticed I was having the same problem, with smelling gas fumes. I checked my gas pump cap, and freakin found out it was messed up. The clicking noise fooled me, but really It wasn't closing tightly all the way, so I bought a brand new one, and gas smell went away....If this not the problem then, check to see When you release ur gas cap to pump gas, you should ALWAYS hear or feel pressure releasing (you know, that "ssshshhhhss" noise). Hope this is answer to ya problem, make sure you close it properly.