As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING COMPLIANCE WITH AWD78-08-07 (SB1785), A SOAP TEST REVEALED COMBUSTION LEAKAGE BETWEEN THE SPARK PLUG HOLES CENTER LINE WITH THE COOLING FIN. SB1787 WHICH IS FOR THE 1340 ENGINE BUT THE FAILURE LOCATION IS THE SAME AS THIS R-985.