Ok, here's the deal: I took my truck wheeling today and when I would stall it it was a real bear to start again (cranked long time then would catch and idled low). When I got back, I washed all the mud off, including the sides of the engine and later that night it wouldn't start! I cranked for a long time numerous times and eventually it started and seemed fine. I have a new fuel filter, but I have a custom fuel tank. It seemed like it was getting no fuel. This is just the kind of problem I was looking for in a 4x4! I am thinking cam/crank sensor or fuel delivery...