As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER NR 1 ENGINE START AND THE NR 1 BLEED SELECTED ON. STRANGE FUMES ENTERED COCKPIT WITH A FAINT BLUE HAZE. BLEED WAS SELECTED OFF AND ODOR DISIPATED. RAN BOTH ENG IAW 72-00-00 CHECKED TEMP AND FULL COLD AND HOT IAW 21-61-00 COULD NOT DUPLICATE.