HI Ken et. al.

Thanks...  I'm thinking it's an injector that's leaking... as I did the oil change to rectify the light and  buzzer... (It had 10-30 Pennzoil in it) and I figured this might help... not sure if oil got diluted quickly (~700 miles or so) 

It also may be a bad sending unit.... I'll try that first

-How easy is it to replace the hi pressure (.9bar) sending unit?

Further questions:

-       How can I test the injectors? (I have an fuel injection pressure tester... but not sure if I can do much with it... pressure will leak down from other areas (like pressure regulator or pump) sooner
I'd LOVE to do this without pulling the injectors out of the motor...  any ideas?

Thanks,
Steve