As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE RUBBER SEAL AROUND THE EDGE OF THE VALVE RIPPED AND LOOKED LIKE IT WOULD HAVE BEEN SUCKED INTO THE ENGINE IN A COUPLE OR MORE HOURS. SUBMITTER STATED THE RUBBER SEAL LOOKED LIKE IT WAS MADE FROM THE WRONG MATERIAL . TT ON PART, 8 HOURS.