As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FUEL INJECTOR BUSHINGS DID NOT STAY IN PLACE WHEN FUEL INJECTORS WERE REMOVED. INJECTORS WERE REMOVED FOR CLEANING. THIS ENGINE HAS 185 TSMOH AND 5 OUT OF THE 6 BUSHINGS LOOSENED WITH THE INJECTOR. PROBABLE CAUSE IS THAT THE LOCTITE 620 DOES NOT HOLD THE BUSHINGS IN PLACE.