i have an 05 350z and i been having trouble. when i start my car it will crank but wont rev up. this would happen every so often but now it wont start up at all. I had a tech. look at it at the gas station because that's where my car wouldn't start and he suggested i had bad fuel pumps. COULD this be the problem why my car won't start?!need help!!!

 

This same problem happened to me with another car, 2007 Mazda 3, the car had trouble starting esp after getting gas. Turned out to be a bad Purge Valve.