I've checked the cold start injector, the resistance is almost 20,000 ohms, voltage at plug is just over 10volts, when the injector is removed, and the engine is cranks, there is no fuel coming out of the injector....

just to be sure I loosend the fuel line to the injector, fuel started hissing out, so I have fuel pressure there too.

I will replace this and see what happens, but it looks like we have the culprit.

Thanks for all the hints.