Fuel Injector Valve Phasing...

[Dave Williams]

-> I have some photo's, taken by John De Armond, of two Rx7 injectors,
-> 280 Z injector, and a GM injector.  All are port injectors (not
-> throttle body), and they have drastically different patterns.

 Actually, it was John who was showing me the patterns.  The "pattern"
in the photos is only present for a small percentage of the injector's
cycle time.  The rest of the time it's dribbling on or dribbling off.