ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 3-5 TABLE 3-2.  UNIT TROUBLESHOOTING (Sheet 2 of 11) Not OK   Not OK   OK   ENGINE CRANKS BUT FAILS TO START Engine cranks but fails to start. Replace fuel filter (refer to paragraph 3.12.2). Perform end item troubleshooting procedures (refer to TM 9-6115-671-14 or other applicable TM). Check for clogged or defective fuel filter (refer to paragraph 3.12.2). Bleed fuel lines (refer to paragraph 3.12.1).  Check for evidence of air bubbles or fuel line blockage. Check for defective fuel transfer supply pump   (refer to paragraph 3.12.3). Unblock or replace fuel line(s) (refer to paragraph 3.12.4). Bleed fuel lines (refer to paragraph 3.12.1). Replace fuel supply pump (refer to paragraph 3.12.3). Notify next higher level of maintenance. OK   Not OK   OK