What was found
(CAN) AFTER COMPLETION OF THE FLIGHT & AS THE PILOT WAS SHUTTING THE ENG DOWN VIA THE CONDITION LEVER, CLA, BEFORE THE ENG CAME TO A COMPLETE STOP, THE TEMP INCREASED & FIRE CAME OUT OF THE EXHAUST STACKS. THE FIREWALL SHUT OFF WAS USED & THE ENG SHUT DOWN. DATA DOWNLOAD FROM THE ONBOARD COMPUTER SHOWED THE ENG FUEL FLOW COMING DOWN TO 0 FOR A PERIOD OF 4 SEC, BEFORE INCREASING AGAIN TO A SUB IDLE FLOW. THE ENG WAS REMOVED FOR OVERTEMP REPAIRS BEFORE WHICH THE FUEL CONTROL RIGGING WAS CHECKED & REVEALED NO ANOMALIES. MFG WILL INVESTIGATE TO ESTABLISH ROOT CAUSE & SUPPLEMENT THE REPORT ONCE THE INFORMATION IS AVAILABLE.