What was found
AIRCRAFT WAS GROUNDED: AFTER FIRST ENGINE START EXCESSIVE FUME SMELL IN CABIN, LINGEREDAND GOT PROGRESSIVELY WORSE AS TAXI PROCEEDED. ACCOMPLISHED J/C 08L0021001. FOUND WHEEL WELL AND BELLY EXTREMELY DIRTY. FOUND EVIDENCE OF DEICING FLUID IN TAIL AREA. WASHED AND CLEANED WHEEL WELL, BELLY, APU INTAKE AND TAIL AREA, PER AMM 12-40-00. RAN PACKS APU, NO FUMES. RAN PACKS WITH ENGINES, NO FUMES.