As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A STRONG VIBRATION IN THE ENGINE AT 60 NM FROM THE AIRPORT WAS PRESENTED, TO 40 NM THIS IS ACCOMPANIED BY NOISE UNABLE TO CORRECT BY REDUCING THE RPM THE ENGINE "COUGHED" LIKE A LACK OF FUEL, CONTINUED FAILURE TO REPORT THE EMERGENCY TO 10NM FROM THE AIRPORT. THE ENGINE WAS INSPECTED AND FOUND THE ASSY FUEL MANIFOLD TO NOZZLE CYLINDER NR 3 WITH A BREAK.