Help please, I can't start the engine

[Bikerjack]

Not sure why you have lost the "i" key setting. Go into the options - controls menu - aircraft and assign the "i" key to "Toggle Selected Engine(s)" - that should do it.

To switch off at the end of a mission you have to flick the two magneto switches to "Off" - located on the left of the cockpit dashboard (Hurri and Spit) directly in front and above the throttle control, and/or switch off fuel.

Hope that helps.