Engine Cooling Trouble - Isuzu 4JB1 Service Information

00 – 14 SERVICE INFORMATION
Checkpoint
Engine overheating
Engine overcooling
Too long engine
warm-up time

11. ENGINE COOLING TROUBLE

Possible cause
Low coolant level
Thermo unit faulty
Faulty thermostat
Faulty coolant unit
Clogged radiator
Faulty radiator cap
Low engine oil level or use of improper
engine oil
Damaged cylinder head gasket
Clogged exhaust system
Loose fan belt
Excessive fuel injected
Improper injection timing
Faulty thermostat
Faulty thermostat
Thermo unit faulty
Correction
Replenish
Replace
Replace
Repair or replace
Clean or replace
Replace
Replenish or change oil
Replenish
Replace
Clean exhaust system or replace
faulty parts
Adjust
Adjust
Adjust
Replace
Replace
Replace