Perkins 1106C Genset, Руководство по устранению неисправностей, Страница: 41 / 188

KENR6933 41
Troubleshooting Section
9. Ensure that the fuel system has been primed.
Refer to Testing and Adjusting, “Fuel System -
Prime”.
10. Check the fuel pressure. Refer to Testing and
Adjusting, “Fuel System Pressure - Test”.
Contact with high pressure fuel may cause fl uid
penetration and burn hazards. High pressure fu-
el spray may cause a fi re hazard. Failure to fol-
low these inspection, maintenance and service in-
structions may cause personal injury or death.
NOTICE
Contact with high pressure fuel may cause personal
injury or death. Wait 60 seconds after the engine has
stopped to allow fuel pressure to purge before any
service or repair is performed on the engine fuel lines.
11. If the high pressure fuel lines have a leak, the
high pressure fuel lines must be replaced. Refer to
Disassembly and Assembly, “Fuel injection lines -
Remove and Fuel injection lines - Install”.
12. If the repairs do 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
•
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. With the engine speed at a fast idle, use the
electronic service tool to isolate one cylinder at
a time. 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. With the engine speed at a fast idle, use the
electronic service tool to isolate one cylinder at
a time. 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.
2. Remove the electronic unit injector from the
suspect cylinder. Refer to Disassembly and
Assembly, “Electronic Unit Injector - Remove”.
3. Install a new electronic unit injector. Refer to
Disassembly and Assembly, “Electronic Unit
Injector - Install”.
4. Repeat the test in 1. If the fault is still apparent,
remove the replacement electronic unit injector
and install the original electronic unit injector.
Refer to Disassembly and Assembly, “Electronic
Unit Injector - Remove” and Disassembly and
Assembly, “Electronic Unit Injector - Install”.
i02528174
Coolant in Engine Oil
Note: This is not an electronic system problem.
Probable Causes
•
Engine oil cooler
•
Cylinder head gasket