2007 NISSAN 350Z engine coolant

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ENGINE MECHANICAL
B ENGINE
CONTENTS
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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

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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

PRECAUTIONS
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As for bolt holes, normally apply liquid gasket inside the
holes. Occasionally, it should be applied outside the holes.
Make sure to read the text of this manual.

Within five minutes of liquid gasket application, install the mat-
ing component.

If liquid gasket protrudes, wipe it off immediately.

Do not retighten mounting bolts or nuts after the installation.

After 30 minutes or more have passed from the installation, fill
engine oil and engine coolant.
CAUTION:
If there are specific instructions in this manual, observe
them.
SEM159F

DRIVE BELTS
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3. While securely holding the square hole (A) in pulley center of
auto tensioner (1) with a spinner handle, move spinner handle in
the direction of arrow (loosening direction of drive belt).
CAUTION:
Avoid placing hand in a location where pinching may occur
if the holding tool accidentally comes off.
4. Under the above condition, insert a metallic bar of approximately
6 mm (0.24 in) diameter [hexagonal wrench (C) shown as exam-
ple in the figure] through the holding boss (B) to lock auto-ten-
sioner pulley arm.
5. Remove drive belt.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:

Make sure drive belt is securely installed around all pulleys.

Make sure drive belt is correctly engaged with the pulley groove.

Check for engine oil and engine coolant are not adhered drive belt and pulley groove.
INSPECTION AFTER INSTALLATION
Turn crankshaft pulley clockwise several times to equalize tension between each pulley, and then confirm ten-
sion of drive belt at indicator (notch on fixed side) is within the possible use range. Refer to EM-12, "
Checking
Drive Belts" .
ComponentsNBS006TG

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and Installation of Drive Belt Auto-TensionerNBS006TH
REMOVAL
1. Remove drive belt. Refer to EM-12, "Removal and Installation" .

Keep auto-tensioner pulley arm locked after drive belt is removed.
2. Remove auto-tensioner and idler pulley.

Keep auto-tensioner pulley arm locked to install or remove auto-tensioner.
: Loosing direction of drive belt
PBIC4944E
1. Front timing chain case 2. Drive belt auto-tensioner 3. Idler pulley
4. Idler pulley
PBIC4945E

INTAKE MANIFOLD COLLECTOR
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INTAKE MANIFOLD COLLECTORPFP:14003
Removal and InstallationNBS006VD

Refer to GI-11, "Components" for symbol marks in the figure.
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain the engine coolant when the engine is hot.
1. Remove tower bar. Refer to FSU-20, "
TOWER BAR" .
1.EVAP canister purge control sole-
noid valve2. Clamp 3. EVAP hose
4. EVAP hose 5. Clamp 6. Water hose
7. Water hose 8.Electric throttle control actuator
(bank1)9. Gasket
10. PCV hose 11. Clamp 12. Intake manifold collector
13. Gasket 14. Water hose 15. Water hose
16.Electric throttle control actuator
(bank2)17. EVAP hose 18. Water hose
19. EVAP tube assembly 20. EVAP hose
A. To vacuum pipe B. To brake booster C. To intake manifold collector
D. To PCV valve E. To heater pipe F. To water outlet (rear)
PBIC4947E

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INTAKE MANIFOLD COLLECTOR
Revision: 2006 November2007 350Z
2. Remove engine cover (1) (2) with power tool.
3. Remove air cleaner case and air duct (RH, LH). Refer to EM-15, "
AIR CLEANER AND AIR DUCT" .
4. Remove electric throttle control actuator (bank1, bank2) as follows:
NOTE:
When removing only intake manifold collector, move electric throttle control actuator without disconnect-
ing water hose.
a. Drain engine coolant.
CAUTION:
Perform this step when engine is cold.
b. Disconnect water hoses from electric throttle control actuator. When engine coolant is not drained from
radiator, attach plug to water hoses to prevent engine coolant leakage.
CAUTION:
Do not spill engine coolant on drive belt.
c. Disconnect harness connector.
d. Loosen mounting bolts in reverse order as shown in the figure.
CAUTION:

Handle carefully to avoid any shock to electric throttle
control actuator.

Do not disassemble.
NOTE:

Figure shows electric throttle control actuator (bank1) viewed
from the air duct side.

Viewed from the air duct side, order of loosening mounting
bolts of electric throttle control actuator (bank2) is the same
as that of the electric throttle control actuator (bank1).
5. Disconnect vacuum hose, PCV hose and EVAP hose from intake manifold collector.
6. Remove EVAP canister purge volume control solenoid valve and EVAP tube assembly from intake mani-
fold collector.
PBIC4987E
PBIC4948E

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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