2007 NISSAN 350Z Fuel System Workshop Manual

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FUEL SYSTEM
B ENGINE
CONTENTS
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SECTION FL
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Revision: 2006 November2007 350Z
FUEL SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Battery Service ................................ 2
FUEL SYSTEM ........................................................... 3
Checking Fuel Lines ................................................. 3
General Precautions ................................................ 3
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND
FUEL PUMP ASSEMBLY ........................................... 4
Removal and Installation .......................................... 4
REMOVAL ............................................................. 4
INSTALLATION ..................................................... 7INSPECTION AFTER INSTALLATION .................. 8
Disassembly and Assembly ...................................... 8
DISASSEMBLY ..................................................... 8
ASSEMBLY ........................................................... 9
FUEL TANK .............................................................. 10
Removal and Installation ........................................ 10
REMOVAL ........................................................... 10
INSTALLATION ................................................... 11
INSPECTION AFTER INSTALLATION ................ 11
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 12
Standard and Limit .................................................. 12
Tightening Torque ................................................... 12

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PRECAUTIONS
Revision: 2006 November2007 350Z
PRECAUTIONSPFP:00001
Precautions for Battery ServiceNBS000IW
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.

FUEL SYSTEM
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FUEL SYSTEMPFP:17503
Checking Fuel LinesNBS000IX
Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loose connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.
General PrecautionsNBS000IY
WARNING:
When replacing fuel line parts, be sure to observe the following.

Put a “CAUTION: FLAMMABLE” sign in the workshop.

Be sure to work in a well ventilated area and furnish workshop with a CO2 fire extinguisher.

Do not smoke while servicing fuel system. Keep open flames and sparks away from the work area.

Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in
safe area.
CAUTION:

Use gasoline required by the regulations for octane number. Refer to GI-5, "Precautions for Fuel
(Unleaded Premium Gasoline Required)" .

Before removing fuel line parts, perform the following procedures:
–Release fuel pressure from the fuel lines. Refer to EC-79, "FUEL PRESSURE RELEASE" .
–Disconnect negative battery terminal.

Always replace O-rings and clamps with new ones.

Do not kink or twist tubes when they are being installed.

Do not tighten hose clamps excessively to avoid damaging hoses.

After connecting fuel tube quick connectors, make sure
quick connectors are secure.
Ensure that connector and resin tube do not contact any
adjacent parts.

After installing tubes, make sure there is no fuel leakage at
connections in the following steps.
–Apply fuel pressure to fuel lines with turning ignition switch
“ON” (with engine stopped). Then check for fuel leaks at
connections.
–Start engine and rev it up and check for fuel leaks at con-
nections.

Use only a genuine NISSAN fuel filler cap as a replacement.
If an incorrect fuel filler cap is used, the “MIL” may come
on.

For servicing “Evaporative Emission System” parts, refer to
EC-33, "
EVAPORATIVE EMISSION SYSTEM" .
SMA803A
SBIA0504E

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FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
Revision: 2006 November2007 350Z
FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLYPFP:17042
Removal and InstallationNBS000IZ
REMOVAL
WARNING:
Be sure to read “General Precautions” when working on the fuel system. Refer to FL-3, "
General Pre-
cautions" .
1. Check fuel level on fuel gauge. If fuel gauge indicates more than
the level as shown in the figure (full or almost full), drain fuel
from fuel tank until gauge indicates level as shown in the figure
or below.
NOTE:
Because fuel will be spilled when removing main and sub fuel
level sensor units for the top of the fuel is above the main and
sub fuel level sensor units installation surface.

As a guide, fuel level becomes the position as shown in the
figure or below when approximately 20 (5-1/4 US gal, 4-3/8
Imp gal) of fuel are drained from fuel tank.

In a case that fuel pump does not operate, perform the follow-
ing procedure.
a. Insert hose of less than 25 mm (0.98 in) in diameter into fuel filler tube through fuel filler opening to draw
fuel from fuel filler tube.
b. Disconnect fuel filler hose from fuel filler tube. Refer to FL-10, "
FUEL TANK" .
c. Insert hose into fuel tank through fuel filler hose to draw fuel from fuel tank.
2. Release the fuel pressure from the fuel lines. Refer to EC-79, "
FUEL PRESSURE RELEASE" .
3. Open fuel filler lid.
4. Open filler cap and release the pressure inside fuel tank.
5. Remove woofer or rear floor box mat and rear floor box. Refer to AV- 4 9 , "
Removal and Installation of
Woofer and Woofer Amp. (BOSE System)" or EI-39, "LUGGAGE FLOOR TRIM" .
1. Retainer 2.Main fuel level sensor unit, fuel filter -
and fuel pump assembly3. O-ring
4. Sub fuel level sensor unit
PBIC1061E
PBIC1139E

FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY
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6. Remove inspection hole cover for main and sub fuel level sen-
sor units by turning clips clockwise by 90 degrees.
7. Disconnect harness connector and quick connector.
Disconnect quick connector as follows:

Hold the sides of connector, push in tabs and pull out fuel feed
tube.

If quick connector sticks to tube of fuel level sensor unit, push
and pull quick connector several times until it start to move.
Then disconnect quick connector by pulling.
PBIC1062E
PBIC1063E
SFE562A

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CAUTION:

Quick connector can be disconnected when the tabs
are completely depressed. Do not twist it more than
necessary.

Do not use any tools to disconnect quick connector.

Keep resin tube away from heat. Be especially careful
when welding near the resin tube.

Prevent acid liquid such as battery electrolyte, etc.
from getting on resin tube.

Do not bend or twist resin tube during installation and
disconnection.

Do not remove the remaining retainer on hard tube (or
equivalent) except when resin tube or retainer is
replaced.

When resin tube or hard tube (or equivalent) is
replaced, also replace retainer with new one.

Replace same color retainer as before replacing.

To keep the connecting portion clean and to avoid
damage and foreign materials, cover them completely
with plastic bags or something similar.
8. Remove main fuel level sensor unit, fuel filter and fuel pump assembly, and sub fuel level sensor unit as
follows.
CAUTION:

Do not bend float arm during removal.

Avoid polluting the inside by residue fuel. Draw out with avoiding inclination by supporting with
a cloth.

Avoid impacts such as falling when handling components.
a. Removal of main fuel level sensor unit, fuel filter and fuel pump
assembly:
i. Remove retainer.
ii. Raise main fuel level sensor unit, fuel filter and fuel pump
assembly, and using snap ring pliers, remove fuel hose connec-
tor.
CAUTION:
Be careful not to damage fuel hose connector by expanding
them excessively.
b. Removal of sub fuel level sensor unit:
i. Remove retainer.
ii. Raise and release sub fuel level sensor unit to remove.Retainer color: White
SBIA0504E
PBIC0163E
PBIC1578E

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INSTALLATION
Note the following, and install in the reverse order of removal.
Main and Sub Fuel Level Sensor Unit

When installing fuel hose connector insert them fully until a click
sound of full stopper engagement is heard.

Face main and sub fuel level sensor units as shown in the fig-
ure, and install them with the knock pin on back aligned with pin
hole on fuel tank.

Install retainer so that its notch becomes parallel with the notch
on fuel tank.

Tighten retainer mounting bolts evenly.
Quick Connector
Connect quick connector of fuel feed hose as follows:
1. Check the connection for damage or any foreign materials.
2. Align the connector with the tube, then insert the connector straight into the tube until a click sound is
heard.
3. After connecting, make sure that the connection is secure by following method.

Visually confirm that the two tabs are connected to the connector.
PBIC1064E
PBIC1065E
PBIC1066E

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Pull the tube and the connector to make sure they are
securely connected.
Inspection Hole Cover
1. Install inspection hole cover with direction mark (arrow) facing front of vehicle.
2. Lock clips by turning counter-clockwise.
INSPECTION AFTER INSTALLATION
Use the following procedure to check for fuel leaks.
1. Turn ignition switch “ON” (with engine stopped), then check connections for leaks by applying fuel pres-
sure to fuel piping.
2. Start engine and rev it up and make sure there are no fuel leaks at the fuel system connections.
Disassembly and AssemblyNBS000J0
CAUTION:
Sub fuel level sensor unit cannot be disassembled and should be replaced as a unit.
DISASSEMBLY
Remove fuel level sensor unit as follows.
1. Disconnect harness connector.

Hold connector by fingers and pull it out, because there is no
stopper release tab.
PBIC1653E
1. Fuel level sensor unit 2. Fuel filter and fuel pump assembly
PBIC1081E
PBIC1078E