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ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 TABLE 3-2.  Troubleshooting - Continued MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Step 2.  Refer to Malfunction 3, and perform steps 1 thru 6. 5.   ENGINE MISFIRES OR RUNS IRREGULARLY OR STALLS FREQUENTLY. Step 1.  Check for fuel being supplied to fuel injection pump. a. Test fuel supply pump capacity.  Refer to paragraph 3-25.2.  If supply pump not defective, do step 2. b. Repair or replace fuel supply pump.  Refer to paragraph 3-25. Step 2.  Check for air in fuel system lines. Bleed fuel system.  Refer to paragraph 3-23.  If no air, do step 3. Step 3.  Check for low coolant temperature. a. If coolant temperature not low, do step 4. b. Replace defective thermostat.   Refer to paragraph 3-9. Step 4.  Check for fuel injector nozzle dirty, defective, or leaking. a. Remove, clean, and test fuel injector.  Refer to paragraphs 3-29.1., 3-29.2., and 3-29.3.  If not defective, do step 5. b. Replace fuel injector nozzle.  Refer to paragraph 3-29. Step 5.  Check for improper fuel injection pump timing. Adjust fuel injection pump timing.  Refer to paragraph 3-28.  If adjusted properly, do step 6. Step 6.  Check for defective fuel injection pump. a. Test fuel injection pump.  Refer to paragraph 3-27.7.  If not defective, do step 7. b. Replace fuel injection pump.   Refer to paragraph 3-27. Step 7.  Check for valves properly adjusted. 3-5


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