As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED THE RIGHT ENGINE WAS VIBRATING AND SURGING ABOVE 30 INCHES OF MANIFOLD PRESSURE. MAINTENANCE INVESTIGATED, CLEANED THE RIGHT ENGINE FUEL NOZZLES, AND REPLACED THE RIGHT ENGINE NR 6 CYLINDER EXHAUST LIFTER DUE TO IMMOBILITY.