Perkins 1106D Troubleshooting Manual page 47

KENR6201-01
g. If fuel is not found in the oil system, check the
electronic unit injectors for excessive fuel leak
off.
h. If the leak off is greater than 38 mL (1.3 oz)
in 30 seconds for a 6 cylinder engine or the
leak off is greater than 25 mL (0.85 oz) in 30
seconds for a 4 cylinder engine, replace the
electronic unit injectors.
Note: The fault is not in the fuel rail pump. Do not
replace the pump.
i. If the leak off is less than 38 mL (1.3 oz) in 30
seconds for a 6 cylinder engine or the leak off
is less than 25 mL (0.85 oz) in 30 seconds for
a 4 cylinder engine, proceed to Test Step 3.d.
3. If the absolute fuel rail pressure is greater
than 25 MPa (3625 psi), perform the following
procedure:
a. Use the electronic service tool to make sure
that the status of the electronic unit injectors
is not "Disabled". If the injectors are disabled
but the injectors were not intentionally disabled
with the electronic service tool, proceed to test
step 3.d.
b. If the electronic unit injectors are not disabled,
use the electronic service tool to perform an
injector solenoid test. Refer to Troubleshooting,
"Injector Solenoid Circuit - Test".
c. If any service has been performed as a result
of Step 3.b, attempt to start the engine. If the
engine will not start, proceed to "Glow Plugs".
d. Make sure that the latest flash file for the
application is installed in the ECM. Refer to
Troubleshooting, "Flash Programming".
e. Contact Perkins Global Technical Support.
Note: This consultation can greatly reduce the repair
time.
f. If Perkins Global Technical Support
recommends the use of a test ECM, install a
test ECM. Refer to Troubleshooting, "Replacing
the ECM".
g. Attempt to start the engine. If the engine will not
start, install the original ECM and then proceed
to Test Step 3.l.
h. If the engine starts normally, stop the engine
and then attempt to start the engine again. If
the engine will not start at the second attempt,
proceed to Test Step 3.k.
This document is printed from SPI². Not for RESALE
i. If the engine starts normally, reconnect the
suspect ECM and then verify that the fault
returns when the suspect ECM is installed.
j. If the engine will not start with the suspect
ECM, replace the ECM. Check that the engine
starts normally. If the engine starts normally, no
further testing is required.
k. Replace the ECM again and then replace the
fuel rail pump. Verify that the fault has been
eliminated. If the engine will not start, proceed
to "Glow Plugs".
l. Check the timing of the fuel rail pump. Refer
to Systems Operation, Testing and Adjusting,
"Fuel Injection Timing - Check".
m. If the timing of the fuel rail pump required
adjustment and the engine will not start,
proceed to "Glow Plugs".
n. If the timing of the fuel rail pump was correct,
replace the fuel rail pump. If the engine will not
start, proceed to "Glow Plugs".
Glow Plugs
Note: Faulty glow plugs will only affect engine starting
when the ambient temperature is below 10 °C (50 °F).
1. Check the operation of the glow plugs. Refer to
Systems Operation, Testing and Adjusting, "Glow
Plugs - Test".
2. If necessary, replace faulty glow plugs. Refer to
Disassembly and Assembly, "Glow Plug - Remove
and Install".
3. Attempt to start the engine. If the engine will not
start, proceed to "Valve Lash".
Valve Lash
1. Check the valve lash. Refer to Systems Operation,
Testing and Adjusting, "Engine Valve Lash -
Inspect/Adjust".
2. Attempt to start the engine. If the engine will not
start, proceed to "Low Compression (Cylinder
Pressure)".
Low Compression (Cylinder Pressure)
1. Perform a compression test. Refer to Systems
Operation, Testing and Adjusting, "Compression
- Test ".
2. If low compression is noted on any cylinders,
investigate the cause and rectify the cause.
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Troubleshooting Section