What was found
AFTER STARTING NR 2 ENGINE TO DO 80 PERCENT NH RUN-UP, SELECTED NR 2 BLEED ON AND THE FLIGHTDECK AND CABIN HAD A STRONG ODOR OF BURNING OIL COMMING FROM THE VENTS. REMOVED THE NR 2 ENGINE P2.2 EXHAUST DUCT, INSPECTED FOR LEAKS, NO LEAKS FOUND. REINSTALLED NR 2 ENGINE P2.2 EXHAUST DUCT, IAW AMM TASKS 36-11-26-000-801, 36-11-26-400-801. GROUND RAN ENGINES WITH BLEEDS ON, FLIGHTDECK AND CABIN FILLED WITH SMOKE WITHIN 2 MINUTES. SMOKE IS COMING FROM NR 2 ENGINE. REPLACED ENGINE.