OK, I am doing something obviously wrong!
Easy: First is to mess with German planes...

The second is more difficult: I can not start the (right) second engine of the JU88
Select engine
turn on fuel cocks (all of them)
throttle at 20% (or anything, no influence to the final result)
pro pitch to fine or coarce (or anything, no influence to the final result)
press I to start the engine
the engine goes through the start sequence and dies out
WTF, did I forget to say
please or anything????
Engine #1 (left) starts and holds, no problem.
~S~