2007 NISSAN 350Z fuel

EM-1
ENGINE MECHANICAL
B ENGINE
CONTENTS
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SECTION EM
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Revision: 2006 November2007 350Z
ENGINE MECHANICAL
PRECAUTIONS .......................................................... 3
Precautions for Procedures without Cowl Top Cover ..... 3
Precautions for Battery Service ................................ 3
Precautions for Drain Engine Coolant and Engine
Oil ............................................................................. 3
Precautions for Disconnecting Fuel Piping .............. 3
Precautions for Removal and Disassembly ............. 3
Precautions for Inspection, Repair and Replace-
ment ......................................................................... 3
Precautions for Assembly and Installation ............... 3
Parts Requiring Angle Tightening ............................. 4
Precautions for Liquid Gasket .................................. 4
REMOVAL OF LIQUID GASKET SEALING .......... 4
LIQUID GASKET APPLICATION PROCEDURE ..... 4
PREPARATION ........................................................... 6
Special Service Tools ............................................... 6
Commercial Service Tools ........................................ 7
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING .............................................. 10
NVH Troubleshooting — Engine Noise .................. 10
Use the Chart Below to Help You Find the Cause
of the Symptom. ...................................................... 11
DRIVE BELTS ........................................................... 12
Checking Drive Belts .............................................. 12
Tension Adjustment ................................................ 12
Removal and Installation ........................................ 12
REMOVAL ........................................................... 12
INSTALLATION ................................................... 13
INSPECTION AFTER INSTALLATION ............... 13
Components ........................................................... 13
Removal and Installation of Drive Belt Auto-Ten-
sioner ..................................................................... 13
REMOVAL ........................................................... 13
INSTALLATION ................................................... 14
AIR CLEANER AND AIR DUCT ............................... 15
Removal and Installation ........................................ 15
REMOVAL ........................................................... 15
INSPECTION AFTER REMOVAL ....................... 16INSTALLATION ................................................... 16
Changing Air Cleaner Filter .................................... 16
REMOVAL ........................................................... 16
INSTALLATION ................................................... 16
INTAKE MANIFOLD COLLECTOR .......................... 17
Removal and Installation ........................................ 17
REMOVAL ........................................................... 17
INSTALLATION ................................................... 19
INTAKE MANIFOLD ................................................. 20
Removal and Installation ........................................ 20
REMOVAL ........................................................... 20
INSPECTION AFTER REMOVAL ....................... 21
INSTALLATION ................................................... 21
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST .......................................................................... 22
Removal and Installation ........................................ 22
REMOVAL ........................................................... 22
INSPECTION AFTER REMOVAL ....................... 24
INSTALLATION ................................................... 24
OIL PAN AND OIL STRAINER ................................. 26
Removal and Installation ........................................ 26
REMOVAL ........................................................... 26
INSPECTION AFTER REMOVAL ....................... 28
INSTALLATION ................................................... 28
INSPECTION AFTER INSTALLATION ................ 30
IGNITION COIL ......................................................... 31
Removal and Installation ........................................ 31
REMOVAL ........................................................... 31
INSTALLATION ................................................... 31
SPARK PLUG (IRIDIUM-TIPPED TYPE) ................. 32
Removal and Installation ........................................ 32
REMOVAL ........................................................... 32
INSPECTION AFTER REMOVAL ....................... 32
INSTALLATION ................................................... 33
FUEL INJECTOR AND FUEL TUBE ........................ 34
Removal and Installation ........................................ 34
REMOVAL ........................................................... 34
INSTALLATION ................................................... 37
INSPECTION AFTER INSTALLATION ................ 39

PRECAUTIONS
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PRECAUTIONSPFP:00001
Precautions for Procedures without Cowl Top CoverNBS003FC
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
Precautions for Battery ServiceNBS003FD
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.
Precautions for Drain Engine Coolant and Engine OilNBS00002
Drain engine coolant and engine oil when engine is cooled.
Precautions for Disconnecting Fuel PipingNBS00003

Before starting work, make sure no fire or spark producing items are in the work area.

Release fuel pressure before disconnecting and disassembly.

After disconnecting pipes, plug openings to stop fuel leakage.
Precautions for Removal and DisassemblyNBS00004

When instructed to use special service tools, use specified tools. Always be careful to work safely, avoid
forceful or uninstructed operations.

Exercise maximum care to avoid damage to mating or sliding surfaces.

Cover openings of engine system with tape or equivalent, if necessary, to seal out foreign materials.

Mark and arrange disassembly parts in an organized way for easy troubleshooting and re-assembly.

When loosening bolts and nuts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specified, do exactly as specified. Power tools may be
used in the step.
Precautions for Inspection, Repair and ReplacementNBS00005
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationNBS00006

Use torque wrench to tighten bolts or nuts to specification.

When tightening bolts and nuts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is speci-
fied, do exactly as specified.

Replace with new gasket, packing, oil seal or O-ring.

Dowel pins are used for several parts alignment. When replacing and reassembling with dowel pins, make
sure that dowel pins are installed in the original portion.

Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.

Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust.
Before assembly, oil sliding surfaces well.

Release air within route when refilling after draining engine coolant.
PIIB3706J

EM-4
PRECAUTIONS
Revision: 2006 November2007 350Z

After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Parts Requiring Angle TighteningNBS00007

Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
–Cylinder head bolts
–Lower cylinder block bolts
–Connecting rod cap bolts

Do not use a torque value for final tightening.

The torque value for these parts are for a preliminary step.

Ensure thread and seat surfaces are clean and coated with engine oil.
Precautions for Liquid GasketNBS00008
REMOVAL OF LIQUID GASKET SEALING

After removing mounting bolts and nuts, separate the mating
surface using seal cutter (SST) and remove old liquid gasket
sealing.
CAUTION:
Be careful not to damage the mating surfaces.

Tap seal cutter to insert it, and then slide it by tapping on the
side as shown in the figure.

In areas where seal cutter (SST) is difficult to use, use plastic
hammer to lightly tap the parts, to remove it.
CAUTION:
If for some unavoidable reason tool such as screwdriver is
used, be careful not to damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using scraper, remove old liquid gasket adhering to the gasket
application surface and the mating surface.

Remove liquid gasket completely from the groove of the gas-
ket application surface, mounting bolts, and bolt holes.
2. Wipe the liquid gasket application surface and the mating sur-
face with white gasoline (lighting and heating use) to remove
adhering moisture, grease and foreign materials.
3. Attach liquid gasket tube to tube presser [SST: WS39930000
(—)].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-45, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
4. Apply liquid gasket without breaks to the specified location with
the specified dimensions.

If there is a groove for liquid gasket application, apply liquid
gasket to the groove.
PBIC0002E
PBIC0003E
EMA0622D

PREPARATION
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Commercial Service ToolsNBS0000A
WS39930000
(—)
Tube presserPressing the tube of liquid gasket
KV10112100
(BT8653-A)
Angle wrenchTightening bolts for bearing cap, cylinder
head, etc. in angle
KV10117100
(J3647-A)
Heated oxygen sensor wrenchLoosening or tightening heated oxygen
sensor 2
For 22 mm (0.87 in) width hexagon nut
KV10114400
(J38365)
Heated oxygen sensor wrenchLoosening or tightening air fuel ratio sensor 1
a: 22 mm (0.87 in)
KV10118600
(J-48641)
Ring gear stopperRemoving and installing crankshaft pulley
—
(J-45488)
Quick connector releaseRemoving fuel tube quick connectors in
engine room Tool number
(Kent-Moore No.)
Tool nameDescription
NT052
NT014
NT379
NT636
PBIC5052E
PBIC0198E

PREPARATION
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(—)
Piston ring expanderRemoving and installing piston ring
(—)
Valve guide driftRemoving and installing valve guide
Intake and Exhaust:
a: 9.5 mm (0.374 in) dia.
b: 5.5 mm (0.217 in) dia.
(—)
Valve guide reamer(1): Reaming valve guide inner hole
(2): Reaming hole for oversize valve guide
Intake and Exhaust:
d
1 : 6.0 mm (0.236 in) dia.
d
2 : 10.2 mm (0.402 in) dia.
(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleanerReconditioning the exhaust system threads
before installing a new air fuel ratio sensor
and heated oxygen sensor (Use with anti-
seize lubricant shown below.)
a: J-43897-18 [18 mm (0.71 in) dia.] for
zirconia heated oxygen sensor and air fuel
ratio sensor
b: J-43897-12 [12 mm (0.47 in) dia.] for
titania heated oxygen sensor
(—)
Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads (Kent-Moore No.)
Tool nameDescription
NT030
NT015
NT016
AEM488
AEM489

EM-20
INTAKE MANIFOLD
Revision: 2006 November2007 350Z
INTAKE MANIFOLDPFP:14003
Removal and InstallationNBS0000J

Refer to GI-11, "Components" for symbol marks in the figure.
REMOVAL
1. Release fuel pressure. Refer to EC-79, "FUEL PRESSURE RELEASE" .
2. Remove intake manifold collector. Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
3. Remove fuel tube and fuel injector assembly. Refer to EM-34, "
FUEL INJECTOR AND FUEL TUBE" .
4. Remove harness bracket.
5. Loosen mounting nuts and bolts with power tool in reverse order
as shown in the figure to remove intake manifold.
CAUTION:

Cover engine openings to avoid entry of foreign materi-
als.

Put a mark on the intake manifold and the cylinder head
with paint before removal because they need installed in
the specified direction.

Loosen mounting bolts and nuts from the inside of mani-
fold to the outside.
6. Remove gaskets.
1. Harness bracket 2. Intake manifold 3. Gasket
A. Refer to EM-21
PBIC4950E
: Engine front
PBIC4951E

EM-22
EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2006 November2007 350Z
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationNBS0000K

Refer to GI-11, "Components" for symbol marks in the figure.
REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have completely cooled down.
NOTE:
When removing right bank side parts only, step 3, 10 and 11 are unnecessary.
1. Remove tower bar. Refer to FSU-20, "
TOWER BAR" .
2. Remove engine cover with power tool. Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
3. Drain engine coolant. Refer to CO-10, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
4. Remove air cleaner case and air duct. Refer to EM-15, "
AIR CLEANER AND AIR DUCT" .
1. Heated oxygen sensor (bank 1) 2. Air fuel ratio sensor (bank 1) 3.Exhaust manifold cover
(upper)
4. Exhaust manifold (right bank) 5. Exhaust manifold cover (lower) 6. Gasket
7. Ring gasket 8. Three way catalyst (right bank) 9. Gasket
10. Heated oxygen sensor (bank 2) 11. Gasket 12. Three way catalyst (left bank)
13. Ring gasket 14. Exhaust manifold (left bank) 15. Exhaust manifold cover (lower)
16. Gasket 17. Air fuel ratio sensor (bank 2) 18.Exhaust manifold cover
(upper)
PBIC4952E

EXHAUST MANIFOLD AND THREE WAY CATALYST
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5. Remove undercover with power tool.
6. Disconnect heated oxygen sensor harness connectors.
CAUTION:

Be careful not to damage heated oxygen sensor 2.

Discard any heated oxygen sensor 2 which has been dropped onto a hard surface such as a
concrete floor. Replace with a new sensor.
7. Remove exhaust mounting bracket between three way catalysts (right and left bank) and transmission.
Refer to EX-3, "
EXHAUST SYSTEM" .
8. Remove exhaust front tube and three way catalysts (right and left bank).
9. Disconnect harness connector and remove air fuel ratio sensor
1 on both banks using heated oxygen sensor wrench (SST).

Put marks to identify installation positions of each air fuel ratio
sensor 1.
CAUTION:

Be careful not to damage air fuel ratio sensor 1.

Discard any air fuel ratio sensor 1 which has been
dropped onto a hard surface such as a concrete floor.
Replace with a new sensor.
10. Disconnect steering lower joint at power steering gear assembly side, and release steering lower shaft.
Refer to PS-17, "
POWER STEERING GEAR AND LINKAGE"
11. Remove water bypass pipe and heater pipe. Refer to CO-28, "WATER OUTLET AND WATER PIPING" .
12. Remove exhaust manifold cover.
13. Loosen mounting nuts in reverse order as shown in the figure to
remove exhaust manifold.
NOTE:
Disregard the numerical order No. 7 and 8 in removal.
14. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
PBIC2299E
A : Right bank
B : Left bank
: Engine front
PBIC4953E