LMAO. We are just a bunch of losers here in a self-admiration circle. I am out too...

 

I suspect it is because no one so far has agreed that your findings meant anything useful. They were only trying to guide you onto the right track, based on their experience.

 

Update time. Day after my last post here the owner got a flashing CEL. Parked it till I could by his place with the scanner. He had already replaced cap rotor and plugs and wires after the flashing CEL started. It did not solve the problem. After that I dropped by and the scanner confirmed a misfire on Cyl 4. A few days later he borrowed my compression gauge assy, and got 175 psi :-)
Also the snake camera view looked good spying a view of the piston top. spark plug wires are not cris-crossed, checked three times. Two spark plugs tried....He had changed the fuel pump and filter (trash in the tank IIRC-but not sure). FPR tested good, fuel pressure is dead on OEM spec.
Also, the spark was verified at the end of spark plug wire to Cyl #4.

Many local mechanics had already told him weeks ago they suspected the spider injector was bad before my first scans. So unless someone here has any last minute ideas to test (???) the spider injector is getting replaced next, then we see what is what next.