hotwiring necessary 1986 W123 turbodiesel

Hei!

I bought a parts car without any keys. Nice late turbo diesel with 200K miles that was stalled a year ago due to electrical problems.

The ignition lock is drilled out by me to be able to steer. I have been trying to hotwire the car to check the engine before putting it in my nicer 1984 NA 300D wagon.
So far it only growls one time(nicely though without hestitation) after glowing and starting. Then it only chuckles without firing.
I have been bleeding the diesel lines x times, maybe without luck.

What am I overlooking?
-Anything with the vacuum lines in the ignition lock? (I connected the two together)
-Or maybe more wires must be connected? (I took one of the two hot red ones, then the red w black stripe, then the purple starter wire)
-Or I didnĀ“t get the air out. (and leaving me scratching my dutch head how to get it right)

Anyone with a hunch?...or rather a golden tip, before I get one from bending over the engine bay? hehehe.. Thanks.

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