Isuzu 4JB1 User Manual

00 – 14 SERVICE INF
ORMATION
11. ENGINE COOLING TROUBLE
Checkpoint Possible cause Correction
Low
coolant level Replenish
T
hermo unit faulty Replace
F
aulty thermostat Replace
F
aulty coolant unit Repair or replace
Clogged r
adiator Clean or replace
F
aulty radiator cap Replace
Low
engine oil level or use of improper
engine oil
Replenish or change oil
Replenish
Dam
aged cylinder head gasket Replace
Clogged ex
haust system Clean exhaust system or replace
faulty parts
Loos
e fan belt Adjust
E
xcessive fuel injected Adjust
Engine over
heating
Improper injection timing Adjust
Engine over
cooling Faulty thermostat Replace
F
aulty thermostat Replace
T
oo long engine
warm-up time
Thermo unit faulty Replace

Isuzu 4JB1 Specifications

General

Brand	Isuzu
Model	4JB1
Category	Engine
Language	English