What was found
LT ENGINE SMOKING DURING ENGINE START (BAD STARTER). FIRE EXTINGUISHER USED. UPON STARTING LT ENGINE, START RELAY FAILEDTO CUT-OUT. ABORTED ENGINE START AND QRT. NG FAILED TO DROP BELOW 15 PERCENT WITH SMOKE COMING FROM LT IB SIDE OF ENGINE. NO FIRE INDICATIONS ON CWP. PULLED LT T-HANDLE AND BLEW BOTTLE. NG STILL FAILED TO DROP BELOW 15 PERCENT UNTIL BATTERIES WERE OFF. MAINTENANCE REPLACED LT STARTER TC 243103, PN 23080-031, SN/OFF 98273 ANDSN/ON 98146,AND REPLACED LT PDU IAW AMM 24 PN A2042C SN/OFF CL-88653 SN/ON CL-53397. MAINTENANCE ALSO REPLACED ENGINE FIRE EXT BOTTLE PN 404028 SN/OFF71753ER, SN/ON71773EKIAW AMM 26 AND TC 262106. ALL CHECKS GOOD