Have you gone to FS Station.com...there is a nice lesson on C-130......try this and let me know if it helped...I had the same problem but now all is well..........be sure to use ground power to start w/ and follow the steps in tutorial............................ I am not sure there is a bug...... in any event this got mine going and no problems since
 http://www.fsstation.com/tutorials/captain-sim-lockheed-c130.html

As for the engine problem...previous reply should correct your problem I would think.......V :)