Hello Peter,
Your english is very well so no problems with that here
Just to be sure... you are talking about the switch you see in the FS of a basic cockpitpanel of the 737 by your throttle? those 2 small switches?
at the top of the basic 737 panel you see on the right 2 switches ENG1 and ENG2 it say off/../start With that switch you start the engine... the only thing you maybe now have done is to give the engine fuel by switching the fuel to ON...
My airbus works simulair... I have to have first my bleed and xfeed open to get fuel to the eng than i have to set my eng starter to ING and switch on the ENG 1 and ENG 2 toggles... that will start both of my engines... after started i have to put my knob back to NORM..
Maybe you mistaken in those 2 ( fuel on/off and eng start on/off)
gr.
Frans M
www.airbus320.nl