Quantcast ENGINE MISSES AT IDLE.

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TM   5-2815-241-34&P TROUBLESHOOTING  ON  ENGINE  TEST  STAND  -  CONTINUED MALFUNCTION TEST  OR  INSPECTION CORRECTIVE  ACTION 8. ENGINE MISSES AT HIGH IDLE - CONTINUED. Step  4. Remove  injectors  (page  2-34).  Check  for  damaged  preformed  packings  or cracked  injector  cups  (page  2-289). Replace  damaged  packings. Replace  cracked  injector  cups. Step  5. Check engine for excessive blowby and wetness in exhaust caused by broken or damaged rings. Isolate damaged cylinders and replace broken or damaged rings. 9. ENGINE MISSES AT IDLE. Step  1. Check  idle  speed  according  to  specifications. Adjust  idle  speed. Step 2. Check  filter,  gaskets,  connections,  and  suction  lines  for  air  leaks. Replace  defective  filter,  leaking  gaskets,  connections,  and  suction lines. Step 3. Check  valve  adjustment  (page  2-106). Readjust   valves. Step  4. Check  injector  timing  (page  2-106). Reset  injector  timing. Step  5. Remove  injectors  (page  2-34).  Check  for  damaged  preformed  packings (page  2-289). Replace   damaged   packings. Step 6. Check engine for excessive blowby and wetness in exhaust caused by broken or damaged  rings. Isolate damaged cylinders and replace broken or damaged rings. 10. ENGINE MISSES UNDER LOAD. Step  1. Check all fuel lines for bends, breaks, or damage causing restriction. Repair or replace all restricted fuel lines. Step  2. Check  filter,  gaskets,  connections  and  suction  lines  for  air  leaks. Replace  defective  filter,  leaking  gaskets,  connections,  and  suction lines. Step  3. Check  valve  adjustment  (page  2-106). Readjust   valves. Step  4. Check  injector  timing  (page  2-106). Reset  injector  timing. Step  5. Remove  injectors  (page  2-34).  Check  for  damaged  preformed  packings (page  2-289). Replace  damaged  packings. 2-428


 


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