Hi Matthias. Sorry to be a pain. I have tried the red button on the APU as suggested. I have also tried CTL+E then the red button an APU, but I still can't get the engines flashed up. Are there switches I need to turn on before I can use the red button. I admit I haven't tried the extensive start up from the checklist yet, maybe I should, but I was just checking for short cuts first. Thanks John
Sounds very strange. Maybe you can try pressing cntrl - shift - F4 before pressing the red button. This will open the standard fuel valves of the Flightsimulator. If this won't help I have no idea of what could be the reason. Then I just could recommend to go through the startup procedure.