Engine Noise - Kubota V3800-CR-TE4 Diagnosis Manual

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

(5) Engine Noise

Possible causes:
*Refer to the previous "List of malfunction causes by symptom" for the subsequent details.
1. Engine fault
• Low compression pressure
• Engine internal fault
• Valve clearance fault
• Valve timing fault
2. Control system
• Damage to the pulsar gear of the crankshaft position sensor
• Air gap of the crankshaft position sensor is large
• SCV operation fault
3. Intake system
• Leak from the intake system parts
4. Fuel system
• Supply pump learning has not been performed
• Fuel quality
5. Cooling system
• Fan belt damage or tension misadjustment
6. CRS (including related fuel line)
• Output system (supply pump, injector and common rail)
• Input system (sensors)
• ECU
7. Others
• Large amount of drag (including the brakes, etc.)
• Loose parts (including part interference sound)
1. Check the DTC
1. Turn the key switch ON and check the DTC.
Factory
No DTC is output.
specification
OK Go to "2. Check the Crankshaft Position Sensor".
NG Check in accordance with the troubleshooting procedures for each DTC.
(a) CAN1 Connector
2. Check the Crankshaft Position Sensor
1. Refer to DTC P0335 and P0336, and implement checking of the
crankshaft position sensor.
OK Go to "3. Check the Camshaft Position Sensor".
NG Repair and replacement of the crankshaft position sensor-related parts.
(1) Crankshaft Position Sensor
(NE Sensor)
3. Check the Camshaft Position Sensor
1. Refer to DTC P0340 and P0341, and implement checking of the
camshaft position sensor.
OK Go to "4. Check the Injector (Including the Pipes, etc.)".
NG Repair and replacement of camshaft position sensor-related parts.
(1) Camshaft Position Sensor
(G Sensor)
1-S37
COMMON RAIL SYSTEM
9Y1200192CRS0058US0
9Y1200192CRS0059US0
9Y1200192CRS0060US0
9Y1200192CRS0061US0
KiSC issued 05, 2012 A