As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BEFORE THE FIRST FLIGHT OF THE DAY THE PILOT COULD NOT START ENGINE. INSPECTED ENGINE ASSY AND FOUND THE GAS GENERATOR LOCKED UP DUE TO COKING FROM THE FUEL INJECTION MANIFOLD. REMOVE THE ENGINE ASSY AND ASSIST TECH IN REPLACING THE FUEL INJECTION MANIFOLD. (K)