Perkins 1106C Genset, Troubleshooting Manual, Page: 60 / 188

60 KENR6933
Troubleshooting Section
2. Check the components for the following conditions:
abnormal wear, excessive wear, straightness,
and cleanliness. If necessary, use new parts for
replacement.
Note: If the camshaft is replaced, new valve lifters
must also be used.
Valve Lash
Adjust the valve lash of the engine. Refer to Testing
and Adjusting, “Engine Valve Lash - Inspect/Adjust”
for the correct procedure.
i02414539
Excessive White Smoke
Note: Some white smoke may be present during
cold start-up conditions when the engine is operating
normally. If the white smoke persists, there may be a
fault.
Probable Causes
•
Coolant temperature sensor circuit
•
Low coolant temperature
•
Glow plugs
•
Fuel quality
•
Valve lash
•
Low compression (cylinder pressure)
•
Individual malfunctioning cylinder
Recommended Actions
Coolant Temperature Sensor Circuit
1. Connect the electronic service tool to the
diagnostic connector.
2. Monitor the display screen on the electronic
service tool in order to verify the presence of active
diagnostic codes for the coolant temperature.
Refer to Troubleshooting, “Engine Temperature
Sensor Open or Short Circuit - Test”.
3. If the fault has not been eliminated, proceed to
“Low Coolant Temperature”.
Low Coolant Temperature
Check that the water temperature regulator is
operating correctly. Refer to Testing and Adjusting,
“Water Temperature Regulator - Test”.
If the water temperature regulator is operating
correctly, refer to “Glow Plugs”.
Glow Plugs
1. Check for proper operation of the glow plugs.
Refer to Testing and Adjusting, “Glow Plugs -
Test”.
2. If the repairs do not eliminate the fault refer to
“Fuel Quality”.
Fuel Quality
1. Check the diesel fuel for quality. Refer to Testing
and Adjusting, “Fuel Quality - Test”.
Note: Diesel fuel with a low cetane value is likely to
cause white smoke.
2. If the repair does not eliminate the fault refer to
“Valve Lash”.
Valve Lash
1. Ensure that the valve lash is correct. Refer to
Testing and Adjusting, “Engine Valve Lash -
Inspect/Adjust”.
2. If the repair does not eliminate the fault proceed to
“Low Compression (cylinder pressure)”.
Low Compression (cylinder pressure)
1. Perform a compression test. Refer to Testing and
Adjusting, “Compression - Test ”.
2. If low compression is noted on any cylinders,
investigate the cause and rectify the cause.
Possible causes of low compression are shown
in the following list:
•
Loose glow plugs
•
Faulty piston
•
Faulty piston rings
•
Worn cylinder bores
•
Worn valves
•
Faulty cylinder head gasket