As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THIS ENGINE WAS OVERHAULED 6/10/99 BY REPAIR STATION. IT NOW HAS 563.3 HOURS AND ALL THE INTAKE VALVES WERE BAD, ALL EXHAUST GUIDES WERE BAD, AND ALL LIFTERS ARE BAD. CYLINDERS WERE NEW FROM PARTS MFG AND SUPPLIER. THIS AIRCRAFT HAS NOT SET FOR OVER 1 MONTH AT A TIME USED HEAVY IN THE SUMMER. THIS IS THE 3RD TIME THIS AIRFRAME HAS HAD LIFTER TROUBLES IN 3 ENGINES ALL GOING ABOUT 600 HOURS.