ARMY TM 9-2815-252-24
AIR FORCE TO 38G1-92-2
TABLE 3-2. Troubleshooting
Test or Inspection
Prime fuel system at fuel filter, refer to paragraph 3-12 If fuel system is free of air, do step 4.
Step 4. Check for fuel injector nozzles dirty or faulty.
a. Remove and test fuel injectors, refer to paragraph 3-17. If not defective, do step 5.
b. Replace fuel injector(s), refer to paragraph 3-17.
Step 5. Check for improper fuel pump timing.
a. Check fuel pump timing, refer to paragraph 3-14. If fuel pump timing is correct, do step 6.
b. Adjust fuel pump timing, refer to paragraph 3-14.
Step 6. Check for defective fuel injection pumps.
a. Test fuel injection pumps, refer to paragraph 3-13.3.
b. Replace defective fuel injection pumps, refer to paragraph 3-13.
4. ENGINE HARD TO START OR WILL NOT START IN COLD WEATHER.
Step 1. Check for faulty heater plugs.
a. Test heater plugs, refer to paragraph 3-6.2. If heater plugs not defective, do step 2.
b. Replace defective heater plug(s), refer to paragraph 3-6.
Step 2. Refer to Malfunction 3 and perform steps 1 through 6.
5. ENGINE MISFIRES OR RUNS IRREGULARLY OR STALLS FREQUENTLY.
Step 1. Check for air in fuel system lines.
Prime fuel system at fuel filter, refer to paragraph 3-12. If not air, do step 2.