Originally Posted by osteologation
Could it be 180 deg off on the cam timing?
Highly, highly doubt it. It was enough of a pain to get to the thing in the first place, I checked it like 6 times before putting it back together, even had a second set of eyes. This is round 2 of dis-assembly and those marks are dead on. All the diamonds line up on both the cam and oil pump and until I messed with the crank (thinking it was the dot supposed to be vertical), the keyway was dead vertical and 90° from the oil pan surface.
I'm building a leakdown tester this weekend, hopefully that'll tell me my compression story.
But I'm going to put it all back together and run it while I diagnose the electrical/sensor/ignition-timing issue, because it was still a running driving truck until I tore it apart to check on things again.