What was found
AIRCRAFT WAS GNDED. AFTER ENG START ON TAXI, BAD CABIN ODOR, BURNING PAX & CREW EYES. REPLACED APU TURBINE CAVITY VENT O RINGS IAW MM 49-91-53. ACCOMPLISHED TASK CARDS 26L00021001, 26L00021002, 26L00021004 & AN APU WASH IAW AMM 45-00-00-100-001A, LEAK CHECKED GOOD.