What was found
98-0118 - ON T/O WITH T/O PWR SET. COCKPIT FILL WITH BURN ODOR. NR 1 BLD WAS OPEN AND LEFT PACK ON. SWITCH BLD AIR SOURCE TO NR 2 ENG. STILL HAD FUMES SWITCH TO RIGHT PACK OPER AND WAS OK. AFTER T/O TURNED LEFT PACK ON WITH CLIMB POWER AND SMELL CAME BACK. SWITCH FROM NR 1 TO NR 2 BLEED SOURCE AND STILL HAD FUMES. REMOVED AND REPLACED LEFT CONDENSER/WATER SEPARATOR SOCK. INSP RAM AIR DOOR AREA AND PRECOOLER EXHAUST FOR SIGN OF BIRD STRIKE/BIRD NEST. ACM MACH OIL LEVEL GOOD. RAN ENG AT T/O PWR AND GOT SMELL WHEN N2 ABOVE 85 PERCENT DECREASE WITH THROT RETARD. SMELL IS FROM NR 1 ENG ONLY. REMOVED AND REPLACED RIGHT H2O SEP BAG PER M/M 21 TAKEOFF POWER RUN OF ALL ENG AND ALL PACKS AND BLD AT MULTIPLE