OK, I've been away for a while, but...
About five months ago, my wagon was inspected and they found a gas leak. I smelled gas every once in a while, but my all knowing dad told me to ignore it. So they fixed it. But about a week ago it started to smell like gas again, but only after it has been sitting for more than two hours, and it is cold, like less than 50F. My mileage is going down by about a mile a gallon, so i am sure it is some kind of leak. Does any one know what is going on?