TM  10-3930-643-34 ENGINE, FUEL, EXHAUST AND COOLING TROUBLESHOOTING AND MAINTENANCE. (cont) 4-1. Engine,  Fuel,  Exhaust  and  Cooling  Troubleshooting. -----------—-------------------------------------------------------------- MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION -----------------------—— -----------------------------------------------— a. ENGINE CRANKS BUT WILL NOT START. Step 1. Test for worn or plugged paragraph 4-13. If fuel injection nozzles are fuel injection nozzles, refer to satisfactory, proceed to step 2. Step 2. Check for faulty solenoid. If fuel solenoid is not functioning properly, Step 3. Check  for  broken  timing  gear,  camshaft drive  gear,  notify  General  Support. notify General Support. or sheared keyway in camshaft 4-2