Thank you for your help guys, I think I narrowed the problem down to the fuel distributor. I checked the fuel pressure today and it was at 65 PSI, which is right on the money. But then when I turn the ignition off the pressure drops in half a second to zero. When I take the spark plugs out and start the engine, a fuel - air mix is just gashing out of the cylinders. So I think my fuel distributor is missed up, even though its brand new.
Does anybody have any ideas what it could be ?
Thanks again for your help.

Gunter