12
Troubleshooting Guide
TROUBLESHOOTING AND ELECTRICAL
SYSTEM: DIESEL VEHICLES
TROUBLESHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSES
REFER TO
Fuel tank is empty
Fuel with low cetane number
Use specified fuel. See owner’s manual.
Excessively high viscosity fuel or engine oil
Use specified fuel and engine oil. See owner’s
manual.
Water in fuel system
Replace fuel and fuel filter.
Air in fuel system
See the Kubota D722 diesel engine manual
(CC P/N 103840201).
Fuel filter clogged
Replace fuel filter.
Fuel line or pipe(s) clogged
Clean or replace fuel line and/or pipe(s).
Injection nozzle clogged
Injection pump failed
See the Kubota D722 diesel engine manual
(CC P/N 103840201).
Fuel pump failure
See the Kubota D722 diesel engine manual
(CC P/N 103840201).
Fuel leak caused by loose injection pipe
retaining nut
Tighten nut. See the Kubota D722 diesel
engine manual (CC P/N 103840201).
Incorrect injection timing
Excessive valve clearance
Improper valve seat alignment, valve spring
broken, or valve seized
Improper valve timing
Piston ring worn
Cylinder compression leak
See the Kubota D722 diesel engine manual
(CC P/N 103840201).
Fuel cam shaft worn
Seizure of crankshaft, camshaft, piston, or
bearing
See the Kubota D722 diesel engine manual
(CC P/N 103840201).
Fuel solenoid failure
Test Procedure 27 – Fuel Solenoid Pull Coil
Circuit on page 12-37 and Test Procedure 28 –
Fuel Solenoid Hold Coil Circuit on page 12-37
Engine does not start (starter motor functions).
Improper idle governor adjustment
Idle RPM Adjustment on page 16-20
TABLE CONTINUED ON NEXT PAGE
Page 12-2
2008-2012 All-Wheel Drive Maintenance and Service Manual
Summary of Contents for Carryall 295 SE
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