What was found
AIRCRAFT WAS GNDED. NOXIOUS FUMES FROM A/C VENTS WITH APU & PACS ON. ACCOMPLISHED TASK CARD 26L31049009, APU LOAD COMPRESSOR WASH, & NOTED AN OILY RESIDUE ON APU COMPARTMENT FWD WALL FROM APU LOAD VLV, DURING THE WASH. THE RESIDUE OIL WAS REMOVED, THE APU & THE APU COMPARTMENT WAS CLEANED. ACCOMPLISHED A SATISFACTORY LEAK & OPERATIONAL CHECKS WITH NO LEAKS OR ODORS BEING DETECTED.