Isuzu 4JB1 User Manual

SERVICE INFORM
ATION 00 – 3
1.
HARD STARTING
1. STARTER INOPERATIVE
Checkpoint Possible cause Correction
Loos
e battery cable terminal poor
connections due to rusting
Clean and/or retighten the battery
cable terminal
Batter
y discharged or weak Recharge or replace the battery
Battery
F
an belt loose or broken Adjust or replace the fan belt
F
usible link Fusible link shorted Replace the fusible link
Star
ter switch Defective starter switch or starter relay Replace the starter switch or the
Starter relay
Def
ective magnetic switch or starter relay Repair or replace the magnetic switch
Starter m
otor
Defective starter motor Repair or replace the starter motor
2. STARTER MOTOR OPERATES BUT ENGINE DOES NOT TURN OVER
Loos
e battery cable terminal Clean and/or retighten the battery
cable terminal
Poor
connections due to rusting Recharge or replace the battery
Batter
y discharged or weak Recharge or replace the battery
Battery
F
an belt loose or broken Adjust or replace the fan belt
Def
ective pinion gear Replace the pinion gear
Def
ective magnetic switch Repair or replace the magnetic switch
Star
ter
Brush wear, Weak brush spring Replace the brush and/or the brush
spring
Engine
Piston, crank bearing seizure, or other
damage
Repair or replace the related parts

Isuzu 4JB1 Specifications

General

Brand	Isuzu
Model	4JB1
Category	Engine
Language	English