As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STRONG ODOR OF EXHAUST NOTED WHEN THRUST LEVERS ADVANCED. OPERATED PACKS AND COULD SMELL FAINT ODOR OF DIESEL. OPERATED PACKS ON APU FOR SEVERAL MINUTES, ODOR FADED. BELIEVE AIRSTART CART INGESTED ITS OWN EXHAUST. OPERATED PACKS ON BOTH ENGINES, ODOR DID NOT RETURN, AMM 21-51-00. (M)