Kubota RTV1140CPX, Workshop Manual

Page: 84 / 379

ENGINE
RTV1140CPX, WSM
1-S1
1. TROUBLESHOOTING
Symptom Probable Cause Solution
Reference
Page
Engine Does Not
Start No fuel Replenish fuel G-8
Air in the fuel system Bleed G-40
Water in the fuel system Change fuel and
repair or replace fuel
system –
Fuel pipe clogged Clean G-31
Fuel filter clogged Change G-31
Excessively high viscosity of fuel or engine oil at
low temperature Use specified fuel or
engine oil G-8
Fuel with low cetane number Use specified fuel G-8
Fuel leak due to loose injection pipe retaining nut Tighten retaining nut 1-S28
Incorrect injection timing Adjust 1-S15
Fuel camshaft worn Replace 1-S34
Injection nozzle clogged Repair or replace 1-S28
Injection pump malfunctioning Replace 1-S33
Seizure of crankshaft, camshaft, piston, cylinder
or bearing Repair or replace –
Compression leak from cylinder Replace head gasket,
tighten cylinder head
screw, glow plug and
nozzle holder 1-S28,
1-S30
Improper valve timing Correct or replace
timing gear 1-S34
Piston ring and cylinder worn Repair or replace 1-S36
Excessive valve clearance Adjust 1-S11
(Starter Does Not
Run) Battery discharged Charge G-28
Starter malfunctioning Repair or replace 8-S26
Main switch malfunctioning Replace 8-S9
Main shift lever switch defective Replace 8-S13
Wiring disconnected Connect –
Engine Revolution Is
Not Smooth Fuel filter clogged or dirty Change G-31
Air cleaner clogged Clean or replace G-32
Fuel leak due to loose injection pipe retaining nut Tighten retaining nut 1-S28
Injection pump malfunctioning Replace 1-S33
Incorrect nozzle injection pressure Adjust 1-S28
Injection nozzle stuck or clogged Repair or replace 1-S28
Governor malfunctioning Repair –
Either White or Blue
Exhaust Gas Is
Observed Excessive engine oil Reduce to specified
level G-8
Piston ring and cylinder worn or stuck Repair or replace 1-S36
Incorrect injection timing Adjust 1-S15
Deficient compression Adjust top clearance 1-S39
KiSC issued 05, 2014 A