Isuzu 4ja1 User Manual

FUEL SYSTEM 6C – 23
6. Injection Pipe
Install the injection pipe.
Injection Pipe Torque N·m(kg·m / lb ft)
29 (3.0 / 22)
Nozzle Side (4JA1TC/4JH1TC) N·m(kg·m / lb ft)
29 (3.0 / 22)
Pump Side (4JA1TC/4JH1TC) N·m(kg·m / lb ft)
40 (4.1 / 30)
7. Injection Pipe Clip
Install the injection pipe clip.
Note:
Make absolutely sure that the clip is correctly
positioned.
Injection Pipe Clip Torque N·m(kg·m / lb in)
8 (0.8 / 69)
8. Leak Off Pipe and Leak Off Hose
Install the leak off pipe to injection nozzle and connect the
leak off hose to the injection pump.
9. Fuel Filter Bracket (Except EURO III model)
Install the fuel filter bracket and tighten bolts to the
specified torque.
Fuel Filter Bracket Bolts Torque N·m(kg·m / lb ft)
21 (2.1 / 15)
10. Fuel Filter Assembly (Except EURO III model)
Install the fuel filter assembly to bracket and tighten bolts
to the specified torque.
Fuel Filter Assembly Bolts
Torque N·m(kg·m / lb ft)
21 (2.1 / 15)
11. Fuel Pipe
1) Connect the fuel hoses to the fuel filter or priming
pump.
2) Connect the fuel hoses to the injection pump.
12. Oil Level Gauge
Install the oil level gauge and tighten bolts to the specified
torque.
Oil Level Gauge Bolts
Torque N·m(kg·m / lb ft)
M8: 19 (1.9 / 14)
M6: 8 (0.8/69 lb in)

Isuzu 4ja1 Specifications

General

Fuel Type	Diesel
Cylinder Configuration	Inline-4
Fuel System	Indirect Injection
Aspiration	Naturally Aspirated
Compression Ratio	21.5:1
Cooling System	Water-cooled
Engine Type	Diesel
Displacement	2.5 L (2499 cc)
Bore x Stroke	93 mm x 92 mm
Maximum Torque	176 Nm (130 lb-ft) at 2000 rpm
Valvetrain	Overhead Valve (OHV)