Euro 500SEL won't start

[werminghausen]

I am still fiddling with my 500SEL to make it a daily driver.
The list of problems is still long even after I was solving some of the problems. The car was starting to be drivable for short distances, but still overheating (after changing the visco fan, thermostat, cleaned radiator etc)
With these problems I was installing a new water pump (what a pain job if you are not aware that you have to remove the front of the engine and pull the damper and crank shaft pulley).
And after changing the water pump the car would not start while before the car started very well.

I think I put everything back orderly and with the crankshaft mark at TDC cams cylinder 1 are pointing both upward, as they should (Micky Mouse ears). Distributor arm is pointing to cylinder 1 firing...so this should work.

Not starting could be fuel or ignition related.

Fuel pump is running if I pull the fuel pump relay and bridge the 2 terminal in the fuse box (30-battery plus and 87). But I don't know if it is running when I crank the engine... I am assuming it does. After cranking it smells like gasoline.

I was then installing the spark tester and there was no spark.

So what could that be?
I have not changed anything with regards to the ignition. The green cable is installed correctly

Why is there no spark?
How can I tackle the transistor ignition in order to get closer to the problem?
Is there something simple that I am overseeing?

Martin