What was found
FOWL SMELL ON CLIMB & CRUISE. SEEMED LIKE WAS EVERYTIME WENT THRU IMC CONDITIONS. CAPT STATED ODOR WAS INTERMITTENT & OCCURS WHEN FLYING THROUGH MOISTURE OR CLOUDS. ODOR WAS PRESENT WITH ANTI ICE ON OR OFF. ISOLATED APU & APU BLEED WITH PACKS ON, OFF & INDIVIDUAL OPS, NO ODOR. RAN NR 2 ENG NO ODOR DETECTED. RAN NR 1 ENG NO ODOR DETECTED. PERFORMED HIGH POWER RUN ON BOTH ENGINES. HAD A VERY FAINT ODOR WITH NR 1 ENG RUNNING. OPENED ENGINE, GVI OF ENGINE, NO SIGNS OF OIL LEAK. BORO OF LPC, HPC & WEEP HOLES IAW AMM 72-00-00-290-828. REMOVED BORESCOPE PLUGS LPC-1, LPC-2, LPC-3, HPC-2, HPC-5, & HPC-6. REMOVED MAIN GEARBOX CRANK PAD COVER.IAW AMM 72-00-00-290-828-A,. COMPLETED BSI OF E1, LPC & HPC AFTER ODOR EVENT IAW AMM 72-00-00-290-828-A, NO DEBRIS, ORGANIC MATTER, OIL OR OTHER LIMITING DEFECTS NOTED. ACCOMPLISHED HIGH POWER RUN WITH PACKS RUNNING NO FOWL ODOR.