T-2 engines wont turn back on after accidental turn off

When you press I (my keybind for turning on/off the engine) in the T-2, it refuses to restart and turn back on, leaving you gliding slowly to your death while frustratingly waiting to see if the engine will restart. Engine will occasionally make noise, and will even throttle up and down from 0% to 110% but nothing will restart them. Any advice? Is this a bug?