ENGINE INTRODUCTION (J08E)
EN01–11
TROUBLESHOOTING (COMMON RAIL SYSTEM)
EN0110601F300002
Engine does not start
Excessive smoke
Low idle speed irregular
Symptom
Possible cause
Remedy/Prevention
Engine does not start (Fuel not
reaching supply pump)
Fuel lines clogged or damaged
Clean or replace fuel lines
Fuel filter clogged
Clean or replace the filter element
Air in fuel caused by improper connec-
tions of fuel line between fuel tank and
feed pump
Repair connections
Filter incorporated in inlet side of feed
pump clogged
Remove foreign material
Breakdown feed pump
Replace the supply pump
Engine does not start (Fuel reaching
supply pump)
Leakage due to improper tightening of
high pressure fuel line
Tighten sleeve nut
Breakdown ECU
Replace the ECU
Engine does not start (Injector
faulty)
Injector broken
Replace the injector
Engine does not start (Electrical
system)
Defective sensors or circuits
Refer to the chapter
"FUEL CON-
TROL"
.
Engine starts and stops
Fuel lines clogged
Clean or replace fuel lines
Air in fuel caused by damaged fuel
lines or improper connection of fuel
lines
Repair fuel lines or replace fuel lines
and gaskets
Engine has low power (Injector
faulty)
Injector broken
Replace the injector
Engine has low power (Electrical
system)
Defective sensors or circuits
Refer to the chapter
"FUEL CON-
TROL"
.
Symptom
Possible cause
Remedy/Prevention
Excessive smoke (Black smoke)
Defective sensors or circuits
Refer to the chapter
"FUEL CON-
TROL"
.
Defective injector
Replace the injector
Excessive smoke (White smoke)
Water in fuel
Check and clean fuel lines
Glow plug not operating
Check glow plug circuit
Symptom
Possible cause
Remedy/Prevention
Low idle speed irregular
Defective sensors or circuits
Refer to the chapter
"FUEL CON-
TROL"
.
Defective injector
Replace the injector