What was found
ODOR OF BURNING OIL IN COCKPIT ONLY. RAN APU, VERIFIED CREW DISCREPANCY. STRONG OIL ODOR FROM COCKPIT. RAN LT AND RT ENGINES. APU AIR HAS A NOTICEABLELY STRONG ODOR OF BURNING OIL. PERFORMED BOROSCOPE INSPECTION OF APU INLET. FOUND RESIDUE OF OIL ALONG COMPRESSOR. REMOVED AND REPLACED THE APU IAW MM 49-10-00. OPS AND LEAK CHECKED GOOD IAW AMM 49-10-00. REMOVED AND REPLACED LT AND RT COALESCER SOCKS IAW AMM 12-10-01. PERFORMED FINAL INSPECTION OF APU INSTALLATION. OPS & LEAK CHECKED AND DUCT BURN OUT ACCOMPLISHED. NO DISCREPANCIES NOTED IAW MM 49-10-00.