The car started!

It has been a combination of bad connection to the SOV, and an air leak.

After the air leak was fixed (new o-ring inside the SOV) , the diesel didn't go to either the suction pump or the injector pump, as the SOV stopped the diesel.

Sometimes the connection worked, and the car started. But stopped again when the movements in the car made the connection break.

So now it works, and it is kicking strong again :-)