Joel:
I hear ya and have read many posts here that claim new injectors need to be primed/bled. In those and other posts, there's a counter argument. The elect. fuel pump will prime the GAS system. It may take a bit of cranking, but after a brief period, the system becomes fully presurrized and the car fires up.
Last year I had to pull the top off of a '95 Isuzu Rodeo 3.2l motor. This included the plenum(air feed) and the fuel rail + injectors. I do realize this is not a CIS system, but it is FI and under pressure.
When I put it back together, I was surprised at just how little cranking it took to get the motor running again.
Look at the following thread and in it, comments made by "mpyne". His profile indicates 29 yrs. experience working on MBs for a living.
http://www.peachparts.com/shopforum/showthread.php?t=58969&highlight=bleeding+injectors