TROUBLESHOOTING
180
OK
OK
OK
1. HARD STARTING
3. ENGINE TURNS OVER BUT DOES NOT START
FUEL IS BEING DELIVERED TO THE INJECTION PUMP
Checkpoint Trouble Cause Countermeasure
Injection nozzle
Injection nozzle injection starting
pressure too low
Improper spray condition
Adjust or replace the injection
nozzle
Injection pump
Defective fuel injection nozzle
resulting in fuel drippage after
fuel injection
Replace the delivery valve
Defective injection pump control
rack operation
Repair or replace the injection
pump control rack
Injection pump plunger worn or
stuck
Replace the injection pump
plunger assembly
Injection pump (VE pump)
Injection pump drive shaft
seizure or other damage
Replace the injection pump drive
shaft
Replace the injection pump
governor spring
Injection pump governor spring
seizure
NG NG
NG NG
NG NG
NG NG
NG NG
NG NG
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