Troubleshooting - wsm Kubota L4100 Workshop Manual

L4100, WSM

1. TROUBLESHOOTING

Symptom
Engine Does Not
Start
Starter Does Not Run
Engine Revolution Is
Not Smooth
Probable Cause
No fuel
Air in the fuel system
Water in the fuel system
Fuel pipe clogged
Fuel filter clogged
Excessively high viscosity of fuel or engine oil at
low temperature
Fuel with low cetane number
Fuel leak due to loose injection pipe retaining nut Tighten nut
Incorrect injection timing
Fuel camshaft worn
Injection nozzle clogged
Injection pump malfunctioning
Seizure of crankshaft, camshaft, piston, cylinder
or bearing
Compression leak from cylinder
Improper valve timing
Piston ring and cylinder worn
Excessive valve clearance
Battery discharged
Starter malfunctioning
Main switch malfunctioning
Safety switches defective
Starter relay defective
Wiring disconnected
Fuel filter clogged or dirty
Air cleaner clogged
Fuel leak due to loose injection pipe retaining nut Tighten nut
Injection pump malfunctioning
Incorrect nozzle injection pressure
Injection nozzle stuck or clogged
Governor malfunctioning
Replenish fuel
Bleed
Change fuel and
repair or replace fuel
system
Clean
Change
Use specified fuel or
engine oil
Use specified fuel
Adjust
Replace
Clean
Repair or replace
Repair or replace
Replace head gasket,
tighten cylinder head
screw, glow plug and
nozzle holder
Correct or replace
timing gear
Replace
Adjust
Charge
Repair or replace
Repair or replace
Replace
Replace
Connect
Change
Clean or change
Repair or replace
Adjust
Repair or replace
Repair
1-S1
ENGINE
Reference
Solution
Page
G-9
G-33
–
G-24
G-27
G-27
G-9
1-S26
1-S15
–
1-S16
1-S29
–
1-S27,
1-S28
1-S46
1-S35,
1-S56
1-S10
G-22
9-S12,
9-S22
9-S7
9-S9
9-S13
–
G-27
G-24
1-S26
1-S29
1-S16
1-S16
–
KiSC issued 08, 2012 A
(EU)