When I got it a few months ago it would start with no problems. Now it has to crank a little before firing up. Sometimes it will fire up then die. It was just tuned up. Is there something I missed during the tune up?
Run some fuel injector cleaner through it. Remember to add the the cleaner then fill up. This ensures the stuff is mixed with the gas. When is the last time you changed the fuel filter, it may have never been done from new. Also think about a new set of spark plugs and airfilter.
I had the same thing happen out of the blue with the 99 jeep grand cherokee that my wife drives. All of the sudden it had to crank for awhile before it would start. The dealer put in a new fuel pump under warranty. On a side note, I sure wish my stangs could hook up off the line on the street like the quadra- drive does in the jeep! ha