Need more info. Is this a new turbine? If not when it was new did it operate properly? How many hours on it? Did you change anything that might be linked to this condition? With the fuel line disconnected from the turbine, do you have a steady stream of fuel coming out the end of the fuel line when operated manually? Might be one of your settings may have been changed accidentally. I can copy my settings to confirm what you have set. What does the RPM's read when it shuts down. Might give a hint of what stage it is in when the shut down occurs. There are settings for the starter through out the start sequence that we can look at.