ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 4-11 TABLE 4-1.  DIRECT SUPPORT TROUBLESHOOTING (Sheet 10 of 12) OK   Not OK   BLUE OR WHITE EXHAUST SMOKE Blue or white exhaust smoke. Check for defective intake or exhaust valve seats or valve guides (refer to paragraph 4.7.2). Repair or replace defective components (refer to paragraph 4.7.3). Notify next higher level of maintenance. Perform end item troubleshooting procedures (refer to TM 9-6115-671-14 or other applicable TM). Check fuel injection pump timing (refer to paragraph 5.3.1). OK   Adjust fuel injection pump timing (refer to paragraph 5.3.1). Not OK