2013 Ford Edge- This problem started a month ago, I went to gas up the wife's car and when I went to restart it, it would crank but not fire. I tried a few more times and finally it started. The idle was all over the place but after getting it on the road, it was fine. I checked a bunch of things at home and found nothing. The next week I gas it up again and upon starting it, although it felt like it was sluggish it started and was ok. The idle was a little up and down but ran fine. My wife got a check engine light last week but when she got home it was off and it showed no stored codes on my reader. I filled it up again but on purpose I didnt fill it 100%. The car started fine and idled fine. So now I really puzzled and last night I went to fill it up 100%. I went to start it and again, it didnt want to start. The motor cranks, I have power but it doesnt fire. More cranking got it running and as I got home it showed no signs of any issue. I am convinced its something fuel related . This has been at all different gas stations so its not the gas. HELP !!!