JAC visited this afternoon, so it was a good opportunity to run the engine. The engine has not been run for over eight weeks. The engine started without hesitation and all indications were normal except the fuel flow. We preformed three starts, one cold and two hot, all starts were good. Fuel flow was not indicating, so I changed the " K " factor and it began to indicate. I will have to experiment with the " K " factor after the aircraft is flying.