As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ECTM WORKSHEET ISSUED BY EXPRESSJET ENGINEERING TO REMOVE AND REPLACE NR 1 ENGINE DUE TO HAZE/ODOR IN THE CABIN. MAINTENANCE REPLACED THE NR 1 ENGINE AND OPERATIONAL CHECKS WERE GOOD. TEAR DOWN REPORT FROM ROLLS ROYCE SHOWED LEAKAGE FROM THE COOL FRONT SUMP ON THE NR 1 ENGINE.