ARMY TM 9-2815-253-24 AIR FORCE TO 38G1-93-2 MARINE CORPS TM 2815-24/3 SYMPTOM INDEX Malfunction Troubleshooting Procedures Page Engine Will Not Crank ............................................................................................................................................ 3-2 Starter Operates But Will Not Turn Over  ................................................................................................................ 3-2 Engine Hard to Start or Will Not Start ..................................................................................................................... 3-2 Engine Hard to Start or Will Not Start In Cold Weather  .......................................................................................... 3-3 Engine Misfires or Runs Irregularly or Stalls Frequently .......................................................................................... 3-3 Engine Does Not Develop Full Power ..................................................................................................................... 3-4 Engine Overheating  ............................................................................................................................................... 3-4 Excessive Oil Consumption .................................................................................................................................... 3-5 Low Oil Pressure ................................................................................................................................................... .3-5 Excessive Fuel Consumption  ................................................................................................................................. 3-5 Black or Gray Smoke  ............................................................................................................................................. 3-6 Blue Exhaust Smoke .............................................................................................................................................. 3-6 Abnormal Engine Noise .......................................................................................................................................... 3-7 Detonation or Pre-Ignition  ...................................................................................................................................... 3-7 TABLE 3-2.  Troubleshooting MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 1.  ENGINE WILL NOT CRANK. Step 1.  Check for defective end item starting system. Troubleshoot per end item maintenance manual.  If not defective, do Step 2. Step 2.  Check for defective starter motor and solenoid. a.  Test starter and solenoid.  Refer to paragraph 3-24.3.1. b.  Repair/replace defective starter and/or solenoid.  Refer to paragraph 3-24. 2.  STARTER OPERATES BUT WILL NOT TURN OVER. Check for worn or broken starter pinion gear and/or flywheel ring gear. a.  Remove starter and inspect pinion gear and flywheel ring gear for damage. b.  Replace defective clutch assembly and/or flywheel ring gear.  Refer to paragraph 3-24 and/or refer to end item maintenance manual. 3.  ENGINE HARD TO START OR WILL NOT START. Step 1.  Check for stop/start lever in wrong position. a.  Check position of lever.  If in proper position, do Step 2. b.  Adjust stop/start lever.  Refer to paragraph 3-23.5. Step 2.  Check for clogged fuel filter. Refer to paragraph 3-16 for inspection.  If not clogged, do Step 3. 3-2