Isuzu NPR 4J Series User Manual

00 – 14 SERVICE INFORMATION
11. ENGINE COOLING TROUBLE
Checkpoint Possible cause Correction
Low coolant level Replenish
Thermo unit faulty Replace
Faulty thermostat Replace
Faulty coolant unit Repair or replace
Clogged radiator Clean or replace
Faulty radiator cap Replace
Low engine oil level or use of improper
engine oil
Replenish or change oil
Replenish
Damaged cylinder head gasket Replace
Clogged exhaust system Clean exhaust system or replace
faulty parts
Loose fan belt Adjust
Excessive fuel injected Adjust
Engine overheating
Improper injection timing Adjust
Engine overcooling Faulty thermostat Replace
Faulty thermostat ReplaceToo long engine
warm-up time
Thermo unit faulty Replace

Isuzu NPR 4J Series Specifications

General

Brand	Isuzu
Model	NPR 4J Series
Category	Engine
Language	English