ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 3-10 Table 3-2.  Unit Level Troubleshooting MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1. ENGINE WILL NOT CRANK Damaged or defective starter motor. Remove and replace starter motor (Para. 3-19). 2. ENGINE WILL NOT START a.    Check for improper valve / rocker arm clearance. Adjust valve clearance (Para. 3-15). b.    Check for kinked, blocked, or clogged fuel line. Adjust fuel line and/or clear line of blockage. c.    Check for clogged, sticking, or worn fuel injector nozzle. Remove and replace fuel injector (Para. 3-14). d.    Refer trouble to direct support maintenance level. 3. ENGINE STARTS AND STOPS a.    Check for damaged air heater or air heater electrical leads. Remove and replace air heaters (Para. 3-16). b.    Check for kinked or clogged fuel line. Adjust fuel line and/or clear line of blockage. c.    Check for clogged, sticking, or worn fuel injector nozzle. Remove and replace fuel injector (Para. 3-14). d.    Refer trouble to direct support maintenance level.