Rick:

1. I would assume Fuel Injected since the intake charge appears to be more
fuel "loaded" during the first part of the intake cycle (???) and not
uniformly atomized.  I assume the intake charge composition of a carbureted
engine would be more consistent throughout the intake cycle.

Yep.


3. Any insight on the yellow combustion flame which appears mostly on the
right side of the frame (perhaps around the intake value)?  I wouldn't think
that any fuel or air would be leaking "IN" during the high pressure
combustion stroke.

Maybe because that's the coolest area?  Not sure.  Gotta think on this some more.


4. There is also a very faint white "ghost" that appears to "rotate" on the
face of the intake value during the compression, combustion, and exhaust
stroke(s).  I can't imagine the value is turning at that point (???).

Me neither.

Walter