ok lets see how many other people have this issue, soooo if i pull into a gas station shut off my 03-g35 6mt....just sayin
when i go to start it again it cranks and cranks and cranks for about 15 seconds before it will start, and than it takes awhile for it to run smooth
so i figured i would try to outsmart that problem by leaving the car running while i was filling up........yea right...... it started idling and running funny while i was pumping
gas idle going up and down and when i pulled away i had to really jump on it and run through the gears to get it back to normal????? and this is the only time it ever acts up, I have never had a problem like if i go into burgerking to eat and come back out, it starts right up so let me know what you think

 

Sounds like an evap problem. There's a warranty repair letter folks got a couple months ago but I think the symptoms we're different. Might need a trip to Nissan for a diagnostic.