As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS REPORTED THAT AFTER ENGINE START UP A RAMP AGENT NOTICED SMOKE COMING FROM THE OIL HEATER EXIT ON THE NR 1 ENGINE AND THERE WAS A SMOKE ODOR IN THE CABIN MAINTENANCE INSPECTED THE NR 1 ENGINE FOR LEAKS . NO LEAKS WERE NOTED. CREW RAN THE ENGINES AND NO FURTHER DEFECTS WERE NOTED..