Isuzu engine C22NE / 22LE / 20LE. Manual — part 109
DRIVEABILITY AND EMISSIONS 6E1-265
7.
Install fuel rail assembly. Tighten the nuts to 19 N
⋅m (1.9
kgf
⋅m). Refer to Fuel Rail Installation Procedure.
Tighten the flare nut to 27 - 33 N
⋅m (2.8 - 3.4 kgf⋅m).
8.
Connect the negative battery cable.
FUEL PRESSURE REGULATOR
Removal
Caution: To reduce the risk of fire and personal injury, it is
necessary to relieve the fuel system pressure before
servicing the fuel system components.
Caution: After relieving the fuel system pressure, a small
amount of fuel may be released when servicing fuel lines
or connections. Reduce the chance of personal injury by
covering the fuel line fitting with a shop towel before
disconnecting the fittings. The towel will absorb any fuel
that may leak out. When the disconnect is completed,
place the towel in an approved container.
Notice: Compressed air must never be used to test or clean a
fuel pressure regulator, as damage to the fuel pressure
regulator may occur.
Notice: To prevent damage to the fuel pressure regulator, do
not immerse the pressure regulator in solvent.
Removal
1.
Depressurize the fuel system. Refer to Fuel Pressure
Relief Procedure.
2. Disconnect the negative battery cable.
3. Remove the fuel pump relay.
4. Disconnect the vacuum line form fuel pressure regulator.
6E1-266 DRIVEABILITY AND EMISSIONS
5. Remove the fuel pressure regulator retaining screw.
6.
Remove the fuel pressure regulator from fuel rail.
Installation
1. Insert the fuel pressure regulator into the fuel rail.
2. Install the fuel pressure regulator retaining bracket and
tighten with a screw.
3.
Connect vacuum line onto the fuel pressure regulator.
4. Install the fuel pump relay.
5. Connect the negative battery cable.
6. Crank the engine until it starts. Cranking the engine may
take longer than usual due to trapped air in the fuel line.
7.
Tighten the flare nut to 27 - 33 N
⋅m (2.8 - 3.4 kgf⋅m).
DRIVEABILITY AND EMISSIONS 6E1-267
FUEL PRESSURE RELIEF
WARNING
REMOVE SLOWLY
FUEL SPRAY MAY
CAUSE INJURY
Caution: To reduce the risk of fire and personal injury, it is
necessary to relieve the fuel system pressure before
servicing the fuel system components.
Caution: After relieving the fuel system pressure, a small
amount of fuel may be released when servicing fuel lines
or connections. Reduce the chance of personal injury by
covering the fuel line fitting with a short towel before
disconnecting the fittings. The towel will absorb any fuel
that may leak out. When the disconnect is completed,
place the towel in an approved container.
1. Remove the fuel filler cap.
2. Remove the fuel pump relay from the underhood relay
box.
3. Start the engine and allow it to stall.
4. Crank the engine for about 30 seconds.
5. Disconnect the negative battery cable.
FUEL PUMP ASSEMBLY
Removal
1. Disconnect the negative battery cable.
2. Drain all fuel from fuel tank from filler neck.
3. Remove the fuel pump relay from the fuse and relay box
at right side of engine room.
4. Remove fuel tank. Refer to Fuel Tank Removal
Procedure.
5. Using commercially available tool, loosen the screws on
the fuel pump and remove the fuel pump from the fuel
tank.
6E1-268 DRIVEABILITY AND EMISSIONS
6. Lift fuel pump to remove from fuel tank.
Inspection
Inspect in-tank fuel filter for tears, damage of evidence of dirt
derbris or water in the fuel. If any of these condition exist,
replace the in-tank fuel filter.
Installation
1.
Insert the fuel pump assembly into fuel tank and place
them in their position.
2. Using commercially available tool, tighten the screws to
the fuel pump assembly into the fuel tank.
3. Install the fuel tank. Refer to Fuel Tank Installation
Procedure.
4. Install the fuel pump relay.
5. Connect the negative battery cable.
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