Sorry I couldn't read every long rant, so forgive me if this has already been answered:
1) WHAT EXACTLY makes you think there is no fuel being delivered from the injectors to the prechamber?
2) How long have you cranked the car with your foot on the floor? When I replaced my head it took something like 3 minutes of cranking before it fired. That's with a totally dry fuel system.
3) You're saying the *bottom* of the inejctors are BONE DRY?
4) Did you use the proper lock tool to install the IP and then verify timing with the same tool after rotating the engine 2 revolutions?
Please let's stay off the head crack thing - that's way off topic of a fuel delivery issue. Lots of information already out there on the #14 head. Mercedes had a design flaw for the first few years of production (say, through 1988 or so) but the later years were fine (say, 1988-95) and remember that the 603.96x was sold in enormous numbers worldwide, despite low shipments to the USA due to annoying EPA regs. The Finns are routinely getting over 400hp out of a stock 603 long block, so it's definitely not a weak engine design. Driving with a light foot is BAD, btw... worst thing you can do for an IDI diesel is piddle around at part throttle all the time and never rev it over 3000rpm. Drive it like you stole it - frequently.
