Kubota D1803-CR-E4, Workshop Manual

Page: 187 / 309

SERVICING
1. Troubleshooting
1.1 Troubleshooting for 03 series engine
This "Troubleshooting" shows only mechanical failures. The failures related to the common rail system (CRS), refer to
the diagnosis manual (DM) for common rail system engine.
Symptom Probable cause Solution
Refer-
ence
page
The engine does not start No fuel Fill up the fuel
－
Air in the fuel system Bleed the air
－
Water in the fuel system Change the fuel and repair or re-
place the fuel system 3-8
3-13
3-13
The fuel pump is damaged Replace
－
The fuel hose is clogged Clean or replace 3-8
The fuel filter is clogged Replace 3-12
The viscosity of fuel at low tem-
perature is too high Replace the specified fuel 3-1
The cetane number of fuel is low Replace the specified fuel 3-1
Fuel leakage because of loose
injection pipe retaining nut Tighten the retaining nut 4-154
The injector is clogged Replace 4-191
The supply pump is damaged Replace 4-125
4-148
Seizure of the crankshaft, cam-
shaft, piston or bearing Repair or replace
－
Compression leakage from the
cylinder Replace the head gasket
Tighten the cylinder head screw 4-111
4-149
Incorrect valve timing Check the timing gear 4-145
Piston ring and cylinder are worn
out Replace 4-141
4-183
Incorrect valve clearance Adjust valve clearance 4-98
The starter does not operate Discharged battery Charge or replace 4-102
Starter is damaged Repair or replace
－
The key switch is damaged Replace
－
The connection of the wires is in-
correct Check or correct
－
(Continued)
SERVICING
1. Troubleshooting 4. ENGINE
D1803-CR-E4,D1803-CR-TE4,D1803-CR-TIE4,V2403-CR-E4,V2403-CR-TE4,V2403-CR-TE4BG,V2403-CR-TIE4
4-87
KiSC issued 12, 2018 A