As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, AFTER STARTING NR 1 ENG, STRONG ELEC BURNING SMELL IN COCKPIT & GALLEY AREA. BOTH ENGS RUNNING WITH APU FEEDING THE PACKS NO SMOKE OR FIRE VISIBLE. COMPLIED WITH ETN EM-72-034 FOR ENG ODOR EVENT TROUBLESHOOTING SUPPLEMENT. PERFORMED GVI OF MAIN CABIN & COCKPIT. OK FOR SERVICE SEE ITEM 4 OF THIS LOG PAGE.