Isuzu engine C22NE / 22LE / 20LE. Service manual - part 108

DRIVEABILITY AND EMISSIONS  6E1-261

FUEL METERING SYSTEM

ACCELERATOR CABLE ASSEMBLY

Removal

1.

Loosen the adjusting nut on the cable bracket mounting
on the throttle body.

2.

Remove the cable clip from holding bracket.

3.

Remove accelerator control cable (on the throttle valve
end).

4.

Remove the accelerator control cable (on the accelerator
pedal end).

5.

Remove the grommet.

6.

Remove the accelerator control cable.

Inspection

Check the following items, and replace the control cable if any
abnormality is found:

•

The control cable should move smoothly.

•

The control cable should not be bent or kinked.

•

The control cable should be free of damage and
corrosion.

Installation

1.  Install the accelerator control cable.

2.  Install the grommet.

3.

Install the accelerator control cable on the accelerator
pedal.

4.

Install the accelerator control cable on the throttle valve.

5.  Install the cable clip to the holding bracket.

6.  Adjust the accelerator cable. Refer to Accelerator Cable

Adjustment Section.

6E1-262  DRIVEABILITY AND EMISSIONS

ACCELERATOR CABLE
ADJUSTMENT

Adjustment

1.  Loosen the adjusting nut.

2.  Loosen the jam nut.

3.  Pull the outer cable while fully closing the throttle valve.

4.  Tighten the adjusting nut.

5.  Tighten the jam nut.

6.  Loosen the adjusting nut and adjust clearance between

adjusting nut and bracket to 2

∼3.5mm.

7.  Tighten the jam nut again.

8.  Manually operate valve.

Important: The valve lever must return up to the stopper screw.
If the valve lever does not reach the stopper screw, repeat the
procedure again from Step 1.

ACCELERATOR PEDAL
REPLACEMENT

Removal

1.  Disconnect the accelerator pedal control cable from the

accelerator pedal assembly.

2.  Remove the two screws retaining the accelerator pedal to

the bulkhead.

3.  Remove the accelerator pedal from the bulkhead.

Installation

1.  Install the accelerator pedal assembly to the bulkhead

with two screws.

2.  Connect the accelerator control cable to the accelerator

pedal assembly.

3.  Adjust accelerator cable if necessary. Refer to

Accelerator Control Cable Adjustment Section.

DRIVEABILITY AND EMISSIONS  6E1-263

FUEL FILLER CAP

The Fuel Filler Cap includes a vacuum valve. If high vacuum
occurs in the fuel tank, the vacuum valve works to adjust the
pressure in order to prevent damage to the tank.

Inspection

Notice: Replace the fuel filler cap with the same type of filler
cap that was originally installed on the vehicle.

•

Check the seal ring in the filler cap for any abnormality
and for seal condition.

•

Replace the filler cap if any abnormality is found.

         

WARNING

REMOVE SLOWLY

FUEL   SPRAY   MAY

   CAUSE   INJURY

  

FUEL FILTER

Removal

1.  Disconnect the negative battery cable.

2.  Remove the fuel filler cap.

3.  Disconnect the fuel line from the fuel filter on the engine

side.

4.  Disconnect the fuel line from the fuel filter on the fuel

tank side.

5.  Remove the bolt on the fuel filter holder.

6.  Remove the fuel filter.

Inspection

1.  Replace the fuel filter when the following occur:

• Fuel leaks from the fuel filter body

• The fuel filter body is damaged

• The fuel filter is clogged with dirt or sediment

2.  If the drain hole is clogged with dust, clean the drain hole

with air.

6E1-264  DRIVEABILITY AND EMISSIONS

Installation

1.  Install the fuel filter in the correct direction.

2.  Install the bolt on the fuel filter holder.

3.  Connect the fuel line on the engine side.

4.  Connect the fuel line on the fuel tank side.

5.  Install the fuel filler cap.

6.  Connect the negative battery cable.

FUEL INJECTORS

Removal

Notice: If the fuel injectors are leaking, the engine oil may be
contaminated with fuel. Check the oil for signs of contamination
and change the oil and filter if necessary.

Notice: Use care in removing the fuel injector in order to
prevent damage to the fuel injector al connector pins or fuel
injector nozzles. The fuel injector is an al component and
should not be immersed in any type of cleaner as this may
damage the fuel injector.

Important: Fuel injectors are serviced as complete assembly
only.

1.  Disconnect the negative battery cable.

2.  Disconnect al connector from fuel injector.

3.  Remove the fuel rail. Refer to Fuel Rail Removal

Procedure.

4.  Remove the fuel injector retainer clip.

5.  Remove the fuel injector assembly from fuel rail.

6.  Remove O-ring from the fuel injector.

7.  Remove O-ring backup from fuel injector.

Inspection

1.  Inspect O-ring for crack, damage or leaks.

2.  Replace worn or damaged O-ring.

3.  Lubricate the new O-rings with engine oil before

installation.

Installation

1.  Lubricate the new O-ring with engine oil.

2.  Install the O-ring backup on the fuel injector.

3.  Install new O-ring on the fuel injector.

4.  Install all four injector on the fuel rail.

5.  Use new injector retainer clip to retain the injetor to the

fuel rail.

6.  Coat the end of the fuel injector with engine oil.