fuel pressure NISSAN 350Z 2007 Z33 Engine Mechanical Workshop Manual

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-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-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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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

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

EM-44
FRONT TIMING CHAIN CASE
Revision: 2006 November2007 350Z
FRONT TIMING CHAIN CASEPFP:13599
Removal and InstallationNBS0000Q
NOTE:

This section describes removal/installation procedure of front timing chain case and timing chain related
parts without removing oil pan (upper) on vehicle.

When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or
installed, remove oil pans (upper and lower) first. Then remove front timing chain case, timing chain
related parts, and rear timing chain case in this order, and install in the reverse order of removal. Refer to
EM-53, "
TIMING CHAIN" .

Refer to EM-53, "TIMING CHAIN" for component parts location.
REMOVAL
1. Remove engine cover with power tool. Refer to EM-17, "INTAKE MANIFOLD COLLECTOR" .
2. Remove undercover with power tool.
3. Release the fuel pressure. Refer to EC-79, "
FUEL PRESSURE RELEASE" .
4. Disconnect the battery cable from the negative terminal.
5. Drain engine oil. Refer to LU-7, "
Changing Engine Oil" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine oil on drive belts.
6. Drain engine coolant from radiator. Refer to CO-10, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
7. Remove radiator cooling fan assembly. Refer to CO-21, "
COOLING FAN" .
8. Separate engine harnesses removing their brackets from front timing chain case.
9. Remove drive belts. Refer to EM-12, "
DRIVE BELTS" .
10. Remove intake manifold collector. Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
11. Remove harness bracket and fuel sub tube mounting bolt on front timing chain case.
12. Remove oil level gauge and guide.
13. Remove power steering oil pump from bracket with piping connected, and temporarily secure it to aside.
Refer to PS-28, "
POWER STEERING OIL PUMP" .
14. Remove power steering oil pump bracket. Refer to PS-28, "
POWER STEERING OIL PUMP" .
15. Remove alternator. Refer to SC-20, "
CHARGING SYSTEM" .
16. Remove water outlet and water piping. Refer to CO-28, "
WATER OUTLET AND WATER PIPING" .
17. Remove left and right valve timing control covers with the following procedure.
a. Disconnect valve timing control harness connector.
b. Loosen mounting bolts in reverse order as shown in the figure.
A : Right bank
B : Left bank
C : Dowel pin hole
PBIC4965E

TIMING CHAIN
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INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.Items Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

CAMSHAFT
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5. Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown in the figure.
a. Tighten No. 7 to 10 in numerical order as shown.
b. Tighten No. 1 to 6 in numerical order as shown.
c. Tighten No. 1 to 10 in numerical order as shown.
d. Tighten No. 1 to 10 in numerical order as shown.
CAUTION:
After tightening mounting bolts of camshaft brackets (No.
1), be sure to wipe off excessive liquid gasket from the
parts list below.

Mating surface of rocker cover

Mating surface of rear timing chain case
6. Inspect and adjust the valve clearance. Refer to EM-80, "
Valve Clearance" .
7. Install camshaft sensor bracket.

Tighten camshaft sensor bracket bolts in numerical order as
shown in the figure.
8. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection of Camshaft Sprocket (INT) Oil Groove
CAUTION:

Perform this inspection only when DTC P0011 or P0021 are detected in self-diagnostic results of
CONSULT-III and it is directed according to inspection procedure of EC section. Refer to EC-81,
"TROUBLE DIAGNOSIS" .

Check when engine is cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-6, "
ENGINE OIL" .
2. Perform the following procedure so as to prevent the engine from being unintentionally started while
checking.
a. Release fuel pressure. Refer to EC-79, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake valve timing control solenoid valve. Refer to EM-72, "
CAMSHAFT" . : 1.96 N·m (0.2 kg-m, 17 in-lb)
: 1.96 N·m (0.2 kg-m, 17 in-lb)
: 5.88 N·m (0.6 kg-m, 52 in-lb)
: 10.4 N·m (1.1 kg-m, 92 in-lb)
PBIC2050E
: Engine front
PBIC5054E

EM-80
CAMSHAFT
Revision: 2006 November2007 350Z
4. Crank the engine, and then make sure that engine oil comes out
from valve timing control solenoid valve hole. End crank after
checking.
WARNING:
Be careful not to touch rotating parts (drive belts, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do not allow engine oil to get on rubber
components such as drive belt or engine mount insulators. Immediately wipe off any splashed
engine oil.

Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from valve timing control solenoid valve hole. Refer to LU-4, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.

Clean oil groove if necessary. Refer to LU-4, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "
RECOMMENDED FLUIDS AND LUBRICANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in the guide may
generate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.

After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Valve ClearanceNBS0000U
INSPECTION
Perform inspection as follows after removal, installation or replacement of camshaft or valve-related parts, or if
there is unusual engine conditions regarding valve clearance.
1 : Valve timing control solenoid valve
: Engine front
PBIC5141E
Items Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

CYLINDER HEAD
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CYLINDER HEADPFP:11041
On-Vehicle ServiceNBS0000Y
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-79, "
FUEL PRESSURE RELEASE" .
3. Disconnect fuel pump fuse to avoid fuel injection during mea-
surement.
4. Remove engine cover with power tool. Refer to EM-17, "
INTAKE MANIFOLD COLLECTOR" .
5. Remove ignition coil and spark plug from each cylinder. Refer to EM-31, "
IGNITION COIL" and EM-32,
"SPARK PLUG (IRIDIUM-TIPPED TYPE)" .
6. Connect engine tachometer (not required in use of CONSULT-III).
7. Install compression tester (Commercial service tool) with
adapter onto spark plug hole.

Use the adapter whose picking up end inserted to spark plug
hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.
8. With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and engine rpm. Perform these steps to check each cyl-
inder.
Compression pressure:
Unit: kPa (kg/cm2 , psi) /rpm
CAUTION:
Always use a fully changed battery to obtain specified engine speed.
PBIC2058E
PBIC0900E
SBIA0533E
Standard Minimum Differential limit between cylinders
1,275 (13.0, 185)/300 981 (10.0, 142)/300 98 (1.0, 14)/300