As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CYLINDER DEVELOPED CRACK FROM INTAKE SEAT AROUND THE OUTER PORTION OF CYLINDER TO SPARK PLUG HOLE. CRACK FOLLOWED THE PATH OF 1 OR 2 FINS AND WENT JUST AFT (CASE SIDE) OF FUEL INJECTOR PORT. THE CRACK WAS ALLOWING NOTICABLE FUEL LEAK/STAIN NEAR INJECTOR PORT AND AT THE 3 O`CLOCK POSITION FOLLOWING THE FINS TO THE RT. THE ENGINE HAD BEEN ON AIRCRAFT AS A REBUILT EXCHANGE SINCE JULY 2004. (K)