As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ENGINE START WITH APU RUNNING FUNNY SMELL IN COCKPIT AND LIGHT SMOKE IN CABIN. ENGINES/APU SHUT DOWN AND CREW DEPLANED THE PASSENGERS. EMERGENCY VEHICLES WERE STANDING BY. NO EVIDENCE OF HOT SPOTS NOTED. MAINTENANCE ISOLATED THE DISCREPANCY TO A FAULTY APU COMPRESSOR SEAL LEAKING OIL. THE ENGINE WATER SEPARATOR BAG WAS REPLACED AND APU WAS DEFERRED IAW THE GAMA MEL DUE TO REQUIRING REPLACEMENT. ENGINE RUNS PERFORMED WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO MAINTENANCE.