2004 ISUZU TF SERIES Workshop Manual

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Page 1945 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE FUEL (6VE1 3.5L) 6C-3
Fuel Metering
The Engine Control Module (ECM) is in complete
control of this fuel delivery system during normal driving
conditions.
The intake manifold function, like

Page 1946 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6C-4 ENGINE FUEL (6VE1 3.5L)
Fuel Filter
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

6C-4 ENGINE FUEL (6VE1 3.5L)
Fuel Filter
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 the battery ground cable.
2. Loosen slowly the fuel filler cap.
NOTE: To prevent spouting out fuel to change the
pressure in the fuel tank.
NOTE: Cover opening of the filler neck to prevent any
dust entering.
3. Disconnect the quick connector into the fuel tube
from the fuel filter.
NOTE: Cover the quick connector to prevent any dus
t
entering and fuel leaking.
NOTE: Refer to “Fuel Tube/Quick Connector Fittings” in
this section when performing any repairs.
4. Pull off fuel filter from holder to side member side.
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 o
r
sediment.
Installation
1. Install the filter to holder from side member side.
NOTE: Attend direction of fuel filter. (1) to engine side
(2) to fuel tank side.
NOTE: Verify to hang holder hook to fuel filter.

NOTE: Verify to hang holder hook to fuel filter.

RTW36CSH000301
2. Connect the quick connector from the fuel tube to
the fuel filter.
NOTE: Pull of the left checker into the fuel pipe.
NOTE: Refer to “Fuel Tube/Quick Connector Fittings” in
this section when performing any repairs.
3. Tighten fuel filler cap until at least one click are
heard.
4. Connect the battery ground cable.
Inspection
After installation, start engine and check for fuel
leakage.
In–Tank Fuel Filter
The filter is located on the lower end of 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 selfcleaning type, no
t
requiring scheduled maintenance. Excess water and
sediment in the tank restricts fuel supply to the engine,
resulting in engine stoppage. In such a case, the tank
must be cleaned thoroughly.

Page 1947 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE FUEL (6VE1 3.5L) 6C-5
Fuel Pump Flow Test
If reduction of fuel supply is suspected, perform the
following checks.
1. Make sure that there is fuel in the tank.
2. With the engine running,

Page 1948 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6C-6 ENGINE FUEL (6VE1 3.5L)
Fuel Pump
Fuel Pump and Associated Parts

RTW46FMF000401
Legend (6) Fuel Tube/Quick Connector
(1) Fuel Feed Port (7) Retainer Ring (Fuel Pump Lock)
(2) Fue

Page 1949 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE FUEL (6VE1 3.5L) 6C-7
3. Remove the retainer ring (7) from the fuel tank
with the removal tool 5-8840-2602-0.

140R100035
4. Remove slowly the fuel pump (4) from the fuel
tank as no

Page 1950 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6C-8 ENGINE FUEL (6VE1 3.5L)
Fuel Tube / Quick – Connector Fittings
Precautions
Do not light a match or create a flame.
Keep flames away from your work area to preven
t
flammable materials

Page 1951 of 4264

ISUZU TF SERIES 2004 Workshop Manual ENGINE FUEL (6VE1 3.5L) 6C-9

140R100028
Reuse of Quick–Connector
Replace the port and connector if scratch, dent or
crack is found.
Remove any dirt build up on the port when instal

Page 1952 of 4264

ISUZU TF SERIES 2004 Workshop Manual 6C-10 ENGINE FUEL (6VE1 3.5L)
Fuel Pump Relay
General Description
In order to control the fuel pump and sender assembly
(FPAS) operation, the FPAS relay is provided. When
the starter switch is tur

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