Isuzu KB P190. Manual - part 391

FUEL SYSTEM (4JK1/4JJ1)  6C-23 

6.  Disconnect the injection pipe sleeve nut (1). 

Note: Cover the areas exposed during parts removal to
prevent the entry of foreign material into the fuel
system. 

 

 

 

 

RTW76CSH000701

7. Disconnect the vacuum pipe and swirl control

solenoid valve from the fuel rail bracket. 

8.  Remove the fuel rail and fuel rail bracket. 

Note: 

•  Do not grasp the pressure sensor, during the

fuel rail removal procedure. 

•  Take care not to damage the connector unit of

the pressure sensor. 

 

 

 

 
 

 

RTW76CSH000801

Legend 

 1. Fuel 

Rail 

  2.  Fuel Rail Bracket 

 3. Vacuum 

Pipe 

  4.  Swirl Control Solenoid Valve 

 

6C-24  FUEL SYSTEM (4JK1/4JJ1) 

Disassembly 

1.  Remove the fuel pressure limiter. 

2.  Remove the pressure sensor. 

 

 

 

 

 

 

 

 

 

 

RTW76CSH000101

Legend 

 1. Fuel 

Rail 

  2.  Fuel Rail Pressure Sensor 

  3.  Fuel Pressure Limiter 

  

Reassembly 

1.  Install the fuel pressure limiter. 

Tightening torque: 172 N

⋅⋅⋅⋅m (17.5 kg⋅⋅⋅⋅m/127 lb ft)

2.  Install the fuel pressure sensor. 

Tightening torque: 98 N

⋅⋅⋅⋅m (10.0 kg⋅⋅⋅⋅m/72 lb ft) 

 

 

Installation 

1.  Tighten the fuel rail bracket and fuel rail using the 

specified torque. 

Tightening torque: 25 N

⋅⋅⋅⋅m (2.5 kg⋅⋅⋅⋅m/18 lb ft)  

2.  Tighten the vacuum pipe to the fuel rail bracket 

using the specified torque. 

Tightening torque: 10 N

⋅⋅⋅⋅m (1.0 kg⋅⋅⋅⋅m/87 lb in) 

3.  Tighten the swirl control solenoid valve to the fuel 

rail bracket using the specified torque. 

Tightening torque: 20 N

⋅⋅⋅⋅m (2.0 kg⋅⋅⋅⋅m/14 lb ft) 

Note:   

•  Do not grasp the pressure sensor, during the 

fuel rail removal procedure. 

•  Take care not to damage the connector unit of

the pressure sensor. 

 

 
 

 

RTW76CSH000801

Legend 

 1. Fuel 

Rail 

  2.  Fuel Rail Bracket 

 3. Vacuum 

Pipe 

  4.  Swirl Control Solenoid Valve 

 

4. Tighten the fuel pipe using the mounting sleeve 

nut and the specified torque. 

Tightening torque: 25 N

⋅⋅⋅⋅m (2.5 kg⋅⋅⋅⋅m/18 lb ft) 

5. Connect the fuel rail pressure sensor harness 

connector. 

 

FUEL SYSTEM (4JK1/4JJ1)  6C-25 

6.  Tighten the fuel leak off pipe and hose (1) using

the mounting eyebolt using the specified torque. 

Tightening torque: 10 N

⋅⋅⋅⋅m (1.0 kg⋅⋅⋅⋅m/87 lb in) 

 

 

 

 

RTW76CSH000401

7.  Install the fuel hose (1). 

 

 
 
 

 

RTW76CSH000601

 

 

8.  Install the fuel feed pipe (1) for supply pump and 

tighten the bolts to the specified torque. 

Tightening torque: 44 N

⋅⋅⋅⋅m (4.5 kg⋅⋅⋅⋅m/33 lb ft) 

 

 

 

RTW76CSH000501

9.  Install the starter motor. 

• Refer to removal procedure for engine 

electricals in this manual. 

 

 

6C-26  FUEL SYSTEM (4JK1/4JJ1) 

Torque Specifications 

 

 
 

 
 

 

 

RTW76CLF000401