Hello all,
I am having intermittent trouble starting my truck after it's parked for a while. First happened when I parked it for an hour, came back and turns over like its trying to win a contest but wont fire. Acts like its out of fuel. Had a quarter of a tank at the time so I filled it upafter I got it running and ran fine for a couple of days-no problems. The last two mornings, same symptom, no start. Had a full tank. Got it running both times and ran fine both days with multiple stop and starts like normal. This morning, started right away. No trouble yet today.

I was going to swap out the fuel pump butsomeone said it could be a "crank shaft position sensor".

would love to hear someones thoughts....