I'm gonna go over there, not sure when, and check it out. I have a compression tester and can test fuel pressure. I figured, it would sound off if the chain did break, while I cranked it, if it did crank.
It will. I've never seen a chain break on a 4.7, but we did work on one that the tensioner broke and let the chain jump time. Bent 3 or 4 valves, and it wouldn't hit at all while cranking and sounded like it had 3 or 4 dead holes.
