I have a 2007 150 ho etec that has literally not missed a beat for four years on the water now. Yesterday I arrived back at the boat ramp and shut the motor down and walked up to get my truck. When I got back in the boat to put it on the trailer I turned the key and the engine sputtered a bit and konked out. After that it did not want to start again. I cranked it over about 5 or 6 more times and then it started to sputter and fight its way back to running. Then it seemed to run just fine and I drove it on the trailer. Maybe I am a little paranoid but this engine has never done this before. It was pretty hot outside, could it be possible that it had a vapor lock or something like that? Just wondering what some of you guys think, thanks a lot.