What was found
STRONG TURBIN ENGINE OIL ODOR DURING DECENCT 14000 & BELOW. REMOVED AND REPLACED CABIN AIR RECIRCULATION FILTER & E/E COOLING AIR FILTER IAW FIM 71-05, TASK 807, & AMM 21-25-01 C/W BOROSCOPE STAGES 1-3 HPC PER AMM 72-00-00. PER FIM 71-05 TASK 807. RAN ENGINES AT PART POWER FOR 15 MINUTES ISOLATED BLEEDS DURING ENGINE RUN THROTTLED BACK ENGINES ONE AT A TIME WITH ENGINE BLEEDS ISOLATED. NO ODOR FROM EITHER ENGINE. ENGINE RUN PERFORMED IAW AMM 71-71-00. PERFORMED FIM TASKS AS REQUIRED IAW FIM 71-05 TASK 807. REMOVED HIGH STAGE VALVE & INSPECTED FOR OIL RESIDUE, NO SIGNS OF OIL PRESENT. REINSTALLED VALVE IAW AMM 36-11-06.