Diagnosis By Malfunction Symptom; List Of Malfunction Causes By Symptom - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM

4. DIAGNOSIS BY MALFUNCTION SYMPTOM

[1] LIST OF MALFUNCTION CAUSES BY SYMPTOM

• Verify the malfunction symptom, and perform diagnosis according to the appropriate number.
• Many diagnostic procedures include check and verification of malfunction symptom while it occurs. Be sure to
perform work while verifying the malfunction symptom.
No. Malfunction Symptom
1 Engine Warning Light Comes On.
2 Engine Does Not Start.
3 Takes A Long Time Before Engine Starts.
4 Idle Failure
5 Engine Noise
6 High Fuel Consumption
7 Poor Acceleration (Insufficient Output)
8 Black Smoke Emitted.
9 White Smoke Emitted.
10 Engine Stalls On Deceleration.
Engine does not crank (starter motor does not
rotate).
Engine stops when the key switch returns to the ON
position from the ST position (engine does not rotate
under its own power).
Takes a long time before engine starts.
May accompany idle failure.
Idle speed is lower than the standard value or
unstable.
Engine may stall.
Abnormal noises come from inside the engine.
Engine sound is loud.
Fuel consumption has increased significantly.
Acceleration is slower than before when depressing
the accelerator pedal.
Power feels insufficient compared with previously.
Large amount of rotation drop.
The amount of black smoke in the exhaust gas has
increased abnormally compared with previously.
The amount of white smoke in the exhaust gas has
increased abnormally compared with previously.
Engine speed drops when releasing the accelerator
pedal.
Engine stalls on deceleration with the accelerator
pedal fully closed.
Engine stalls immediately after the machine stops
when decelerating with the accelerator pedal fully
closed.
1-S19
COMMON RAIL SYSTEM
Detail
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9Y1200192CRS0021US0
KiSC issued 05, 2012 A