What was found
REPEAT WRITE UP, STRONG BURNING OIL, CHEMICAL, DIRTY SOCKS ODOR FROM TAKEOFF THRUST, UNTIL 4000-5000, ODOR CHANGED TO STRONG DIRTY SOCK UNTIL ABOUT 16-17000. DISSIPATED FL220. FWD & MID FA REPORTED SIMILAR ODORS. NO ODORS NOTICED AFTER ENG START & DURING TAXI. ASIDE FROM EXHAUST ODOR FROM OTHER ACFT DURING TAXI. GROUNDED - YES. PERFORMED AMM 05-50-00, IDENTIFICATION CAUSE OF CABIN ODOR. RAN APU & BLEED AIR WITH PACK 1 & 2. NO ODOR NOTED. PERFORMED ENG 1 & 2 IDLE, NO NOTICEABLE ODOR WITH PACK 1 OR 2. PERFORMED HPR ENG 1 & 2 TEST NR 13, TAKE OFF PWR TEST, NO ODOR NOTED WITH PACK 1 OR 2. IAW AMM 71-00-00-700-840-A. PERFORMED PACK BURN LEVEL A DECON IAW AMM 21-00-00-615-809-A AS PRECAUTION. OK FOR SVC.