Perkins 1106C Genset, Troubleshooting Manual, Page: 69 / 188

KENR6933 69
Troubleshooting Section
Pistons
1. Inspect the pistons for damage and wear. Replace
any damaged parts.
2. If the noise is still apparent, refer to “Valve Lash”.
Valve Lash
1. Refer to Troubleshooting, “Excessive Valve Lash”.
2. If the fault has not been eliminated, 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 noise 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”.