What was found
FORTY HOURS AFTER CYLINDER ASSY REPLACED, ALLL EXHAUST VALVES WERE LEAKING ON COMPRESSION CHECK ON ALL 4 CYLINDERS.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
FORTY HOURS AFTER CYLINDER ASSY REPLACED, ALLL EXHAUST VALVES WERE LEAKING ON COMPRESSION CHECK ON ALL 4 CYLINDERS.