Isuzu engine C22NE / 22LE / 20LE. Manual — part 32
ENGINE FUEL 6C-7
Inspection
1. Replace the fuel filter if the fuel leaks from fuel filter body or
if the fuel filter body itself is damaged.
2. Replace the filter if it is clogged with dirt or sediment.
3. Check the drain and if it is clogged with dust, clean it out
with air.
Installation
1. Install the fuel filter in the proper direction.
2. Install fuel filter holder fixing bolt.
3. Connect fuel hoses on engine side and fuel tank side.
4. Install fuel filler cap
5. Connect the battery ground cable.
Inspection
After installation, start engine and check for fuel leak age.
In-Tank Fuel Filter
The filter is located on the lower end of the fuel pickup tube in
the fuel tank. It prevents dirt from entering the fuel pipe and
also stops water unless the filter is completely submerged in
the water. It is a self cleaning type, not requiring scheduled
maintenance. Excess water and sediment in the tank restricts
fuel supply to the engine, resulting in engine stop. In such a
case, the tank must be cleaned throughly.
6C-8 ENGINE FUEL
Fuel Pump
Fuel Pump and Associated Parts
Legend
1 Fuel Pump and Sender Assembly
2 Fuel Tank Assembly
2
1
Removal
CAUTION: When repair to the fuel system has been
completed, start engine and check the fuel system for
loose connection or leakage. For the fuel system
diagnosis, see Section "Driceability and Emission".
1. Disconnect battery ground cable.
2. Loosen fuel filler cap.
3. Support underneath of the fuel tank assembly (2) with a
lifter.
4. Remove fuel tank assembly (2). Refer to "Fuel Tank
Removal" in this section.
5. Remove fuel pump and sender (FPAS) assembly (1) fixing
snapring and remove the FPAS assembly.
ENGINE FUEL 6C-9
NOTE:
•
After removing pump assembly (1), cover fuel tank to
prevent any dust entering.
•
Remove the fuel pump lock.
Installation
1. Install FPAS assembly (1).
2. Install fuel tank assembly (2). Refer to "Fuel Tank
Installation".
3. Fill the tank with fuel and tighten fuel filler cap.
4. Connect battery ground cable.
Fuel Pump Relay
General Description
In order to control the FPAS operation, the FPAS relay is
provided. When the starter switch is turned to "ON" position,
the FPAS relay operates the FPAS for 2 seconds.
When it is turned to "START" position, the Engine Control
Module receives the reference pulse from the Ignition Control
Module and it operates the relay, again causing the FPAS to
feed fuel.
6C-10 ENGINE FUEL
Fuel Tank
Fuel Tank and Associated Parts
Legend
1 Roll Over&Float Valve (If applicable)
2 Hose; Evaporative Fuel (If applicable)
3 Hose; Air Breather
4 Hose; Fuel Filler
5 Fuel Pump and Sender Assembly
6 Fuel Tank Assembly
7 Hose; Fuel Delivery
8 Hose; Fuel Return
4
(1, 2)
3
5
6
7
8
Removal
CAUTION: When repair to the fuel system has been
completed, start engine and check the fuel system for
loose connection or leakage. For the fuel system
diagnosis, see Section "Driveability and Emission".
1. Disconnect battery ground cable.
2. Loosen fuel filler cap.
3. Support underneath of the fuel tank protector with a lifter.
4. Disconnect evaporative fuel hose at the canister.
5. Disconnect fuel delivery hose and fuel return hose near the
fuel filter.
NOTE: Plug both ends of the fuel hoses to prevent fuel
leakage.
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