Originally Posted by
KhanTyranitar
On cold mornings, anything under 40 degrees, the van will misfire at startup. If I drive off, the misfire clears up fairly quickly, often before I reach the main road. The van runs great. The colder it is outside, the worse this problem is. The colder it is, the longer it takes to clear up. On warmer days, which I haven't had in a while, it will start up just fine.
Almost sounds like a miss from overnight fuel injector leak down into one or more cylinders. Time and temperature intervals you describe would seem to correlate to what it would take to clear a slightly flooded cylinder. Just a thought.