TM10-3930-660-10 MALFUNCTION TEST   OR   INSPECTION CORRECTIVE   ACTION Step   4.   Check   the   water   separator   for   water. Drain  the  water  separator.  (Refer  to  para.  3-10.) Step  5.  Check  to  see  if  any  fuel  lines  are  damaged. Notify   Unit   Maintenance. 3. ENGINE  MISFIRES  OR  RUNS  ROUGH Step  1. Step  2. Step  3. Step  4. Step  5. Check  to  see  if  fuel  tank  is  low  or  empty. Fill  fuel  tank. Check  to  see  if  any  moisture  is  present  in  water  separator. Drain  the  water  separator.  (Refer  to  para.  3-10.) Check  for  black  or  gray  exhaust  smoke.  Plugged  or  dirty  intake  system. Clean  or  replace  air  filters.  (Refer  to  para.  3-8.) Check  for  white  or  blue  smoke.  Indicates  engine  is  cold, Allow  engine  to  warm  up. Check  for  leaks  in  fuel  lines  and  injectors.  Notify  Unit  Maintenance. 4. LOW   ENGINE   POWER Step  1. Step  2. Step  3. Check   air   filter   restriction   indicator. Clean  the  air  filter.  (Refer  to  para.  3-8.) Check   the   exhaust   pipe   for   obstruction. Remove   any   obstructions. Check  for  high  engine  oil  level. Notify  Unit  Maintenance  if  oil  level  is  high. 5. ENGINE   OVERHEATS Damage  to  the  radiator  can  occur  if  pressure  cap  is  removed  on  a  hot engine.   Allow   appropriate   cool   down   time   before   checking   the   coolant level.  Failure  to  follow  this  precaution  could  result  in  severe  personal injury  or  vehicle  damage. 3-2

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