EM-12
ENGINE MECHANICAL
-
Troubleshooting (Diesel Engine Diagnosis)
ENGINE NOISE WHEN WARM
(Cranking Noise with Excessive Vibration)
(Possible Cause)
(Check Procedure and Correction Method)
1. ENGINE COOLANT
TEMPERATURE TOO LOW
Check coolant temperature with water temperature
gauge.
If not sufficiently warm, thermostat
is
faulty and
should be replaced.
2.
IMPROPER IN
ENGINE WlLL NOT RETURN TO IDLE
Refer to step
7
of ENGINE CRANKS NORMALLY
BUT WI LL NOT START.
3.
FAULTY INJ
(Possible Cause) (Check Procedure and Correction Method)
Refer to step
9
of ENGINE CRANKS NORMALLY
BUT WILL NOT START.
Operate adjusting lever on top of injection pump.
and check if engine returns to idle. (See page
E
M-27)
If so, accelerator cable
is
binding or improperly ad-
justed and should be repaired accordingly.
If engine does not return to idle, injection pump
is
faulty and should be replaced.
ENGINE WlLL NOT SHUT
OFF
WITH KEY
(Possible Cause) (Check Procedure and Correction Method)
IMPROPER FUEL CUT SOLENOID
OPERATION
Disconnect connector of fuel cut solenoid, and
check if engine stops.
If so, starter switch
is
faulty and should be repaired
as
necessary or replaced.
If engine does not stop, either fuel cut solenoid
is
faulty or there
is
interference by foreign particles.
Repair
as
necessary.
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