What was found
THE LT STARTER FAILED DURING START. NO STARTER CUTOUT ON LEFT ENGINE, SAW SMOKE COMING OUT OF LEFT ENGINE INBOARD STARTER/GENERATOR VENT. MAINTENANCE VERIFIED DC STARTER/GENERATOR WAS INTERNALLY BURNED OUT, CAUSING SMOKE; NO OTHER FIRE OR DAMAGE EVIDENCE IN ENGINE NOTED. REPLACED LEFT DC STARTER/GEN P/N 23080-031, S/N ON-97381, S/N OFF-6925; ALSO REPLACED LEFT DC GCU, S/N ON-96582, S/N OFF-99700. RAN ENGINE, ALL CHECKS ARE GOOD.