2007 NISSAN 350Z fuel

EM-24
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 November2007 350Z
INSPECTION AFTER REMOVAL
Surface Distortion

Check the surface distortion of the exhaust manifold mating sur-
face with straightedge and feeler gauge.

If it exceeds the limit, replace exhaust manifold.
INSTALLATION
Note the following, and install in the reverse order of removal.
Exhaust Manifold Gasket

Install exhaust manifold gasket in direction shown in the figure.
Exhaust Manifold

If stud bolts were removed, install them and tighten to the specified torque below.

Install mounting exhaust manifold in numerical order as shown
in the figure.
NOTE:
Tighten nuts No. 1 and 2 in two steps. The numerical order No. 7
and 8 shown second step.
Air Fuel Ratio Sensor 1 and Heated Oxygen Sensor 2

Install air fuel ratio sensor 1 and heated oxygen sensor 2 in the original position.Limit : 0.7 mm (0.028 in)
PBIC1096E
A : Right bank
B : Triangle press
C : Left bank
: Engine front
PBIC4954E
: 14.7 N·m (1.5 kg-m, 11 ft-lb)
A : Right bank
B : Left bank
: Engine front
PBIC4953E

EXHAUST MANIFOLD AND THREE WAY CATALYST
EM-25
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Revision: 2006 November2007 350Z

Install referring to the following if the installation positions cannot
be identified.
*: Air fuel ratio sensor 1 is the same for both bank 1 and
bank 2.
CAUTION:

Before installing a new air fuel ratio sensor 1 and heated
oxygen sensor 2, clean exhaust system threads using oxygen sensor thread cleaner (commercial
service tool: J-43897-18 or J43897-12) and apply anti-seize lubricant (commercial service tool).

Do not over torque air fuel ratio sensor 1 and heated oxygen sensor 2. Doing so may cause dam-
age to air fuel ratio sensor 1 and heated oxygen sensor 2, resulting in the “MIL” coming on.Glass tube color
Air fuel ratio sensor 1* : Black
Heated oxygen sensor 2 (bank 1) : White
Heated oxygen sensor 2 (bank 2) : White
PBIC2652E

EM-34
FUEL INJECTOR AND FUEL TUBE
Revision: 2006 November2007 350Z
FUEL INJECTOR AND FUEL TUBEPFP:16600
Removal and InstallationNBS0000O

Refer to GI-11, "Components" for symbol marks in the figure.
CAUTION:
Do not remove or disassemble parts unless instructed as shown in the figure.
REMOVAL
WARNING:

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.

To avoid the danger of being scalded, do not drain engine coolant when engine is hot.
1. Remove engine cover with power tool. Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
2. Release fuel pressure. Refer to EC-79, "
FUEL PRESSURE RELEASE" .
3. Drain engine coolant, or when water hoses are disconnected, attach plug to prevent engine coolant leak-
age. Refer to CO-10, "
Changing Engine Coolant" and EM-17, "INTAKE MANIFOLD COLLECTOR" .
1. Quick connector cap 2. Fuel feed hose (with damper) 3. O-ring
4. Fuel sub tube 5. O-ring 6. Fuel damper cap
7. Fuel damper 8. O-ring 9. Fuel tube
10. Clip 11. O-ring (black) 12. Fuel injector
13. O-ring (green)
A. Refer to EM-37
PBIC5145E

FUEL INJECTOR AND FUEL TUBE
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Revision: 2006 November2007 350Z
CAUTION:
Perform this step when engine is cold.
4. Remove intake manifold collector. Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
5. Remove fuel feed hose (with damper) (1) from fuel sub-tube (2)
and harness bracket (3).
NOTE:
There is no fuel return route.
CAUTION:

While hoses are disconnected, plug them to prevent fuel
from draining.

Do not separate fuel damper and fuel feed hose.
6. When separating fuel feed hose (with damper) and centralized under-floor piping connection, disconnect
quick connector as follows:
a. Remove quick connector cap (2) from quick connector connec-
tion on right member side.
b. Disconnect fuel feed hose (with damper) (1) from bracket hose
clamp.
c. Disconnect quick connector from centralized under-floor piping as follows:
CAUTION:
Disconnect quick connector by using quick connector release [SST: — (J-45488)], not by picking
out retainer tabs.
i. With the sleeve side of quick connector release facing quick connector, install quick connector release
onto centralized under-floor piping.
ii. Insert quick connector release into quick connector until sleeve
contacts and goes no further. Hold quick connector release on
that position.
CAUTION:
Inserting quick connector release hard will not disconnect
quick connector. Hold quick connector release where it
contacts and goes no further.
iii. Draw and pull out quick connector straight from centralized
under-floor piping.
CAUTION:

Pull quick connector holding “A” position as shown in
the figure.

Do not pull with lateral force applied. O-ring inside quick connector may be damaged.

Prepare container and cloth beforehand as fuel will leak out.

Avoid fire and sparks.

Keep parts away from heat source. Especially, be careful when welding is performed around
them.

Do not expose parts to battery electrolyte or other acids.

Do not bend or twist connection between quick connector and fuel feed hose (with damper) dur-
ing installation/removal.
: Engine front
PBIC4961E
PBIC4962E
PBIC1898E

EM-36
FUEL INJECTOR AND FUEL TUBE
Revision: 2006 November2007 350Z

To keep clean the connecting portion and to avoid dam-
age and foreign materials, cover them completely with
plastic bags or something similar.
7. Disconnect harness connector from fuel injector.
8. Loosen mounting bolts in reverse order as shown in the figure,
and remove fuel tube and fuel injector assembly.
CAUTION:
Do not tilt it, or remaining fuel in pipes may flow out from
pipes.
9. Remove fuel injector (2) from fuel tube (4) as follows:
a. Open and remove clip (1).
b. Remove fuel injector (2) from fuel tube (4) by pulling straight.
CAUTION:

Be careful with remaining fuel that may go out from fuel
tube.

Be careful not to damage injector nozzles during
removal.

Do not bump or drop fuel injector.

Do not disassemble fuel injector.
10. Remove fuel sub-tube and fuel damper, if necessary.
PBIC1899E
: Engine front
PBIC4963E
3: O-ring
A : Installed condition
B : Clip mounting groove
PBIC5038E

FUEL INJECTOR AND FUEL TUBE
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Revision: 2006 November2007 350Z
INSTALLATION
1. Install fuel damper as follows:
a. Install new O-ring to fuel tube as shown.

When handling new O-ring, be careful of the following cau-
tion:
CAUTION:

Handle O-ring with bare hands. Do not wear gloves.

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of
foreign material.

When installing O-ring, be careful not to scratch it with
tool or fingernails. Also be careful not to twist or
stretch O-ring. If O-ring was stretched while it was
being attached, do not insert it quickly into fuel tube.

Insert new O-ring straight into fuel tube. Do not twist it.
b. Install spacer to fuel damper.
c. Insert fuel damper straight into fuel tube.
CAUTION:

Insert straight, making sure that the axis is lined up.

Do not pressure-fit with excessive force.

Insert fuel damper unit “B” is touching “A” of fuel tube.
d. Tighten bolts evenly in turn.

After tightening bolts, make sure that there is no gap between fuel damper cap and fuel tube.
2. Install fuel sub-tube.

When handling new O-ring, be careful of the following caution:
CAUTION:

Handle O-ring with bare hands. Do not wear gloves.

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of foreign material.

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not
to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.

Insert O-ring straight into fuel tube. Do not decenter or twist it.

Insert fuel sub-tube straight into fuel tube.

Tighten mounting bolts evenly in turn.

After tightening mounting bolts, make sure that there is no gap between flange and fuel sub-tube.
3. Install O-rings to fuel injector, paying attention to the following.
CAUTION:

Upper and lower O-ring are different. Be careful not to confuse them.

Handle O-ring with bare hands. Do not wear gloves.

Lubricate O-ring with new engine oil.

Do not clean O-ring with solvent.

Make sure that O-ring and its mating part are free of foreign material.Reference value : 130 N (13.3 kg, 29.2 lb)
Fuel tube side : Black
Nozzle side : Green
PBIC2903E

EM-38
FUEL INJECTOR AND FUEL TUBE
Revision: 2006 November2007 350Z

When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.

Insert O-ring straight into fuel injector. Do not decenter or twist it.
4. Install fuel injector to fuel tube as follows:
a. Insert clip (3) into clip mounting groove (D) on fuel injector (5).
CAUTION:

Do not reuse clip. Replace it with a new one.

Be careful to keep clip from interfering with O-ring. If
interference occurs, replace O-ring.
b. Insert fuel injector (5) into fuel tube (1) with clip attached.

Insert it while matching it to the axial center.

Insert fuel injector (5) so that protrusion (A) of fuel tube
matches cutout (B) of clip (3).

Make sure that fuel tube flange (E) is securely fixed in flange
fixing groove (C) on clip (3).
c. Make sure that installation is complete by checking that fuel
injector does not rotate or come off.

Make sure that protrusions of fuel injectors are aligned with
cutouts of clips after installation.
5. Install fuel tube and fuel injector assembly to intake manifold.
CAUTION:
Be careful not to let tip of injector nozzle come in contact with other parts.

Tighten mounting bolts in two steps in numerical order as
shown in the figure.
6. Connect fuel injector harness connector.
7. Connect fuel feed hose (with damper).

Handling procedure of O-ring is the same as that of fuel damper and fuel sub-tube.

Insert fuel damper straight into fuel sub-tube.

Tighten mounting bolts evenly in turn.

After tightening mounting bolts, make sure that there is no gap between flange and fuel sub-tube.
8. Connect quick connector between fuel feed hose (with damper) and centralized under-floor piping con-
nection as follows:
a. Make sure no foreign substances are deposited in and around centralized under-floor piping and quick
connector, and no damage on them.
b. Thinly apply new engine oil around centralized under-floor piping from tip end to spool end.
c. Align center to insert quick connector straightly into centralized under-floor piping.
2 : O-ring (Black)
4 : O-ring (Green)
PBIC5042E
: Engine front
1st step
: 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step
: 23.6 N·m (2.4 kg-m, 17 ft-lb)
PBIC4963E

FUEL INJECTOR AND FUEL TUBE
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Revision: 2006 November2007 350Z

Insert quick connector to centralized under-floor piping until
top spool is completely inside quick connector, and 2nd level
spool exposes right below quick connector.
CAUTION:

Hold “A” position as shown in the figure when inserting
centralized under-floor piping into quick connector.

Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.

Insert until you hear a “click” sound and actually feel the
engagement.

To avoid misidentification of engagement with a similar
sound, be sure to perform the next step.
d. Pull quick connector by hand holding “A” position. Make sure it is completely engaged (connected) so that
it does not come out from centralized under-floor piping.
e. Install quick connector cap to quick connector connection.

Install quick connector cap with arrow on surface facing in
direction of quick connector (fuel feed hose side).
CAUTION:
If cap cannot be installed smoothly, quick connector may
have not been installed correctly. Check connection
again.
9. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Check on Fuel Leakage
1. Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2. Start engine. With engine speed increased, check again for fuel leakage at connection points.
CAUTION:
Do not touch engine immediately after stopped, as engine becomes extremely hot.
PBIC2471E
KBIA1298E