ARMY TM 9-6115-672-14 AIR FORCE TO 35C2-3-444-32 MARINE CORPS TM 09244A/09245A-14 4-19 TABLE 4-4.  UNIT TROUBLESHOOTING (CONTINUED) No   Not OK   OK   OK   Not  OK   No   No   Yes   ENGINE RUNS ERRATICALLY OR STALLS FREQUENTLY Engine runs erratically or stalls frequently. Check FAULT INDICATOR on CIM display screen.   Is a fault displayed? (Fig 2-2) Go to troubleshooting section corresponding to fault displayed.   See Symptom Index, page 4-10. Bleed fuel lines.  Refer to TM 9-2815-260-24.  Is there evidence of air bubbles or fuel line blockage? Inspect exhaust pipe and muffler (see para. 4.9.1). Unblock exhaust pipe or replace muffler (see para. 4.9.1). Check for contaminated fuel (see para. 3.3.6) or incorrect grade of fuel (Table 3-3). Replace fuel filter/ water separator. Refer to TM 9-2815-260-24.   Drain fuel into suitable container. Service fuel tank (see para. 3.3.6). Bleed fuel lines. Refer to TM 9-2815-260-24. Notify next higher level of maintenance. Change fuel filter/ water separator (para. 4.11.9). Does Engine Start? Yes   Unblock or replace fuel lines as necessary (see para. 4.11.1).  Bleed and tighten fuel lines. Refer to TM 9-2815-260-24.