As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WOULD NOT START ON THE 3RD FLIGHT OF THE DAY. INSPECTED ENGINE ASSY AND FOUND FUEL COKING AT INJECTION MANIFOLD. REMOVED INJECTION MANIFOLD AND INSTALLED SAME TYPE INJECTION MANIFOLD. COMPLIED WITH GROUND RUN AND LEAK CHECK AND OPERATIONAL CHECK, FOUND TO BE GOOD. ALL WORK DONE IAW MM. (K)