Perkins 1106C Genset, Troubleshooting Manual, Page: 67 / 188

KENR6933 67
Troubleshooting Section
3. Check that the compressor housing for the
turbocharger is free of dirt and debris.
4. Check that the turbine housing for the turbocharger
is free of dirt and debris.
5. Check that the turbine blades rotate freely in the
turbocharger.
6. Ensure that the wastegate on the turbocharger is
adjusted correctly. Refer to Testing and Adjusting,
“Wastegate - Inspect”. If the wastegate actuator
is faulty, replace the wastegate actuator. Refer
to Disassembly and Assembly, “Turbocharger -
Disassemble” and Disassembly and Assembly,
“Turbocharger - Assemble”.
7. If necessary, replace the turbocharger. Refer
to Disassembly and Assembly, “Turbocharger
- Remove” and Disassembly and Assembly,
“Turbocharger - Install”.
8. Check that the repairs have eliminated the faults.
9. If the fault has not been eliminated, proceed to
“Fuel Supply”.
Fuel Supply
1. Visually check the fuel tank for fuel. The fuel
gauge may be faulty.
2. Ensure that the fuel supply valve (if equipped) is
in the full OPEN position.
3. If the temperature is below 0 °C (32 °F), check
for solidi fi ed fuel (wax).
4. Check the primary fi lter/water separator for water
in the fuel.
5. Check for fuel supply lines that are restricted.
6. Check that the low pressure fuel lines are tight
and secured properly.
7. Check the fuel fi lters.
8. Check the diesel fuel for contamination. Refer to
Testing and Adjusting, “Fuel Quality - Test”.
9. Check for air in the fuel system. Refer to Testing
and Adjusting, “Air in Fuel - Test”.
10. Ensure that the fuel system has been primed.
Refer to Testing and Adjusting, “Fuel System -
Prime”.
11. Check the fuel pressure. Refer to Testing and
Adjusting, “Fuel System Pressure - Test”.
12. If the repair does not eliminate the fault refer 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 any faults.
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
•
Damaged cylinder head
3. Perform all necessary repairs.
4. Ensure that the repairs have eliminated the faults.
5. If the repair does not eliminate the fault refer to
“Individual Malfunctioning Cylinders”.
Individual Malfunctioning Cylinders
1. Use the electronic service tool to perform the
“Cylinder Cut-out Test”. Note if there is any
reduction in engine speed. If a reduction in engine
speed is not noted, the isolated cylinder is not
operating under normal conditions. If the isolation
of a particular cylinder results in a reduction of
engine speed that is less than normal, this may
indicate that the cylinder is operating below normal
performance. Investigate the cause of the fault on
any cylinder that is not operating. Investigate the
cause of the fault on any cylinder that is operating
below normal performance.
2. If all cylinders have been checked and no
faults were detected proceed to “Electronic Unit
Injectors”.
Electronic Unit Injectors
1. Use the electronic service tool to perform the
“Cylinder Cut-out Test”. Note if there is any
reduction in engine speed. If a reduction in engine
speed is not noted, the isolated electronic unit
injector is not operating under normal conditions.
If the isolation of a particular cylinder results in a
reduction of engine speed that is less than normal,
this may indicate that the electronic unit injector is
operating below normal performance.