I have been driving my car for about 6 months now and on random occasions I get a gas smell when I fill the tank all the way. I have put the car on a lift at work and give it the old lookseedoodle. I looked at the tank, lines, and the injectors and I saw no leaks. The smell never last that long though. Usually once I get the guage needle to go down a bit it goes away. Anyone have a bit of knowledge of that?