As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED REAR ENGINE RUNNING TO LEAN CONDITION. NO MIXTURE ADJUSTMENT AVAILABLE. FOUND A CRACK IN THE NR 6 CYLINDER FUEL SUPPLY LINE TO NR 6 CYLINDER. REPLACED LINE WITH NEW LINE PN 630662, LEAK TESTED AND TEST FLIGHT PERFORMED, SATISFACTORY.