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Isuzu 4JH1 - User Manual

Isuzu 4JH1
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WORKSHOP MANUAL
2011MY TF SERIES
ENGINE
4JA1/4JH1 MODELS
SECTION 6
Isuzu Motors Limited
E-Solutions &
Service Marketing Dept.

Table of Contents

Questions and Answers

Isuzu 4JH1 Specifications

General IconGeneral
Bore x Stroke95.4 mm x 104.9 mm
Compression Ratio18.5:1
Fuel SystemDirect injection
Cylinder ConfigurationInline-4
Valves per Cylinder4
Fuel TypeDiesel
Engine TypeDiesel, four-stroke
Displacement3.0 liters
Maximum Torque217 lb-ft (294 Nm) @ 1800 rpm
Oil Capacity6.5 liters (with filter)

Summary

SECTION 6 TROUBLESHOOTING

1. HARD STARTING

Steps to diagnose when the engine is hard to start.

3. INSUFFICIENT POWER

Diagnosis and repair for insufficient engine power.

6. OVERHEATING

Steps to diagnose and resolve engine overheating issues.

15. STARTER MOTOR PROBLEM

Troubleshooting starter motor issues.

SECTION 6 A ENGINE MECHANICAL

SECTION 6 B ENGINE COOLING

Diagnosis

Troubleshooting guide for engine cooling system problems.

SECTION 6 C FUEL SYSTEM

SECTION 6 D ENGINE ELECTRICAL

SECTION 6 E ENGINE CONTROL SYSTEM (4 JH1)

Diagnostic Information And Procedures

General procedures for diagnosing engine control system issues.

Diagnostic Trouble Code (DTC) List

List of Diagnostic Trouble Codes with symptom and flash codes.

SECTION 6 F EXHAUST SYSTEM

SECTION 6 H ACCELERATOR CONTROL

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