I'm working on an aircraft where I want it to have a small-medium sized frame, but use turbine engines. I've copied the GeneralEngineData, TurbineEngineData, jet_engine and fuel sections alomst directly out of the cfg file for the Lear, yet my engines don't start. I press Ctrl-E, they power up to the point where they should kick in, then they just die.

What could I be doing wrong?