3. Troubleshooting
119
Malfunctions Causes Remedies
4. The nozzle or the nozzle holder
is not functioning properly.
The engine cannot reach its
maximum speed.
1. The governor spring is too weak
or is improperly adjusted.
2. The control lever is not reaching
the maximum-speed position.
3. The nozzle’s injection operation
is poor.
Inspect and then repair or replace.
Readjust or replace.
Readjust.
Repair or replace.
The engine’s maximum speed is
too high.
1. The governor spring is too
strong or is improperly adjust.
2. The governor flyweights or
governor sleeve movement is
not smooth.
Readjust or replace.
Repair or replace.
Idling is unstable. 1. The injection quantities are not
uniform (the delivery valve is
not operating properly).
2. The governor’s idling
adjustment is improperly
adjusted.
3. The plunger is worn.
4. The plunger spring is broken.
5. The rubber damper is worn.
6. The governor lever shaft pin is
worn excessively.
7. The feed pump blades are not
operating properly.
8. The regulating valve is stuck in
the open position.
9. The fuel filter element is
clogged and therefore fuel oil
delivery is poor.
10.The nozzle or the nozzle holder
is not functioning properly.
Inspect or replace.
Readjust.
Replace the distributor assembly.
Replace.
Replace.
Replace.
Repair or replace.
Replace.
Clean or replace.
Inspect and then repair or replace.
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