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 REPORTED THE GAS GENERATOR BARELY ROTATES DURING START. INSPECTED ENGINE ASSY AND FOUND GAS GENERATOR COKING FROM FUEL INJECTION MANIFOLD. REMOVE ENGINE ASSY AND ASSIST TECH IN REPLACING THE FUEL INJECTION MANIFOLD. MFG HIGHLY RECOMMENDED FUEL ADDITIVE. (K)