What was found
WHEN T/O POWER WAS APPLIED BOTH PILOTS NOTICED A VERY STRONG OIL BURNING ODOR. REJECTED T/O AT 90 KTS, COMPLETED QRH CHECK LIST AND TAXIED TO GATE. WHEN TAXIING IN POWER ODOR RETURNED. REMOVED AND REPLACED BOTH LT AND RT A/C PACK WATER SEPARATOR COALESCER BAGS IAW A310-200 AMM 21-51-16-3. PERFORMED HIGH POWER RUNS ON ENGINES NR 1 AND NR 2. ALSO ALTERNATED A/C PACKS AND BLEED AIR SOURCES FROM ENGINES IAW A300/A310 JET RUN HANDBOOK, NO OIL ODOR NOTED. OPS CHECK GOOD.