Ins INFINITI QX56 2004 Factory Service Manual

OIL PAN AND OIL STRAINER
EM-23
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56
b. Remove the oil pan (lower) using Tool.
CAUTION:
Do not damage mating surface.
3. Remove the oil strainer from the oil pan (upper).
4. Remove the oil pan (upper) using the following steps.
a. Remove the oil pan (upper) bolts in reverse order shown.
b. Remove the oil pan (upper) from the cylinder block by prying it at
the points shown, using suitable tool.
CAUTION:
Do not damage mating surface.
5. Remove O-rings from the oil pump and front cover.
NOTE:
Do not reuse O-rings.
INSPECTION AFTER REMOVAL
Clean oil strainer.Tool number: KV10111100 (J-37228)
WBIA0566E
KBIA2467E
KBIA2468E
KBIA2469E

EM-24Revision: August 2007
OIL PAN AND OIL STRAINER
2004 QX56
INSTALLATION
1. Install the oil pan (upper) using the following steps.
a. Apply liquid gasket thoroughly as shown.
Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-
45, "Recommended Chemical Products and Sealants" .
CAUTION:
Apply liquid gasket to outside of bolt hole for the hole
shown by .
b. Install new O-rings to the oil pump and front cover side.
c. Tighten bolts in numerical order as shown.
d. Install the rear plate cover.
2. Install the oil strainer to the oil pan (upper).
3. Install the oil pan (lower).
a. Apply liquid gasket thoroughly as shown.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-45, "
Recommended Chemical Products and Sealants" .
KBIA2470E
KBIA2469E
M6 × 30 mm (1.18 in) : No. 15, 16
M8 × 25 mm (0.98in) : No. 1, 3, 5, 7, 11, 13
M8 × 45 mm (1.77 in) : No. 2, 4, 6, 8, 10, 14
M8 × 123 mm (4.84in) : No. 9, 12
PBIC2553E
KBIA2471E

OIL PAN AND OIL STRAINER
EM-25
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56
b. Tighten the oil pan (lower) bolts in numerical order as shown.
4. Install the oil pan drain plug.
5. Installation of the remaining components is in the reverse order of removal.

Do not fill the engine oil for at least 30 minutes after oil pan is installed.
INSPECTION AFTER INSTALLATION
1. Check engine oil level and add engine oil if necessary. Refer to LU-7, "OIL LEVEL" .
2. Start the engine, and check there is no leak of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check engine oil level again.
PBIC2595E

EM-26Revision: August 2007
IGNITION COIL
2004 QX56
IGNITION COILPFP:22448
Removal and InstallationEBS00ILI
REMOVAL
1. Remove the engine room cover using power tool. Refer to EM-11 .
2. Disconnect the harness connector from the ignition coil.
3. Remove ignition coil.
CAUTION:
Do not shock ignition coil.
INSTALLATION
Installation is in the reverse order of removal.
1. Ignition coil 2. Spark plug
KBIA2505E

SPARK PLUG (PLATINUM-TIPPED TYPE)
EM-27
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56
SPARK PLUG (PLATINUM-TIPPED TYPE)PFP:22401
Removal and InstallationEBS00ILJ
REMOVAL
1. Remove the ignition coil. Refer to EM-26, "REMOVAL" .
2. Remove the spark plug using suitable tool.
INSPECTION AFTER REMOVAL
Use standard type spark plug for normal condition.
The hot type spark plug is suitable when fouling occurs with the standard type spark plug under conditions
such as:

Frequent engine starts

Low ambient temperatures
The cold type spark plug is suitable when spark knock occurs with the standard type spark plug under condi-
tions such as:

Extended highway driving

Frequent high engine revolution
1. Ignition coil 2. Spark plug
KBIA2505E
SEM 29 4A
MakeNGK
Standard typePLFR5A-11
Hot typePLFR4A-11
Cold typePLFR6A-11
Gap (Nominal) : 1.1 mm (0.043 in)

EM-28Revision: August 2007
SPARK PLUG (PLATINUM-TIPPED TYPE)
2004 QX56
CAUTION:

Do not drop or shock spark plug.

Do not use a wire brush for cleaning.

If plug tip is covered with carbon, spark plug cleaner may
be used.

Checking and adjusting plug gap is not required between
change intervals.
INSTALLATION
Installation is in the reverse order of removal.Cleaner air pressure:
Less than 588 kPa (5.9 bar, 6 kg/cm
2 , 85 psi)
Cleaning time:
Less than 20 seconds
SM A77 3C
SM A80 6CA

FUEL INJECTOR AND FUEL TUBE
EM-29
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56
FUEL INJECTOR AND FUEL TUBEPFP:16600
Removal and InstallationEBS00ILK
CAUTION:
Do not remove or disassemble parts unless instructed as shown.
REMOVAL
1. Remove the engine room cover using power tool. Refer to EM-11, "REMOVAL" .
2. Release the fuel pressure. Refer to EC-46, "
FUEL PRESSURE RELEASE" .
3. Disconnect the negative battery terminal.
4. Disconnect the fuel injector harness connectors.
5. Disconnect the fuel hose assembly from the fuel tubes (right bank and left bank).
CAUTION:

Plug the fuel hoses to prevent fuel from draining.

Do not separate the fuel connector and fuel hose.
6. Remove the fuel injectors with the fuel tube assembly.
1. Fuel tube (right bank) 2. Cap 3. Fuel damper
4. O-ring 5. O-ring (Blue) 6. Fuel injector
7. Clip 8. O-ring (Brown) 9. O-ring
10. Fuel hose assembly 11. Fuel tube (left bank)
KBIA2472E

EM-30Revision: August 2007
FUEL INJECTOR AND FUEL TUBE
2004 QX56
7. Remove the fuel injector from the fuel tube using the following
steps.
a. Spread open and remove the clip.
b. Remove the fuel injector from the fuel tube by pulling straight
out.
CAUTION:

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

Do not damage injector nozzles during removal.

Do not bump or drop fuel injectors.

Do not disassemble fuel injectors.
8. Remove the fuel damper from each fuel tube.
INSTALLATION
1. Install the fuel damper to each fuel tube using the following
steps.
a. Apply engine oil to the new O-ring and set it into the cap of the
fuel tube.
CAUTION:

Handle O-ring with bare hands. Never wear gloves.

Lubricate new 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 for-
eign material.

When installing O-ring, do not scratch it with tool or fin-
gernails.

Do not twist or stretch the O-ring.
b. Make sure that the backup spacer is in the O-ring connecting surface of the fuel damper.
NOTE:
The backup spacer is part of the fuel damper assembly.
c. Insert the fuel damper until it seats on the fuel tube.
CAUTION:

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

Do not pressure-fit with excessive force.
d. Install the cap, and then tighten the bolts evenly.

After tightening the bolts, make sure that there is no gap between the cap and fuel tube.
2. Install new O-rings to the fuel injector paying attention to the items below.
CAUTION:

Upper and lower O-ring are different.
KBIA2506E
Reference value :130 N (13.3 kg, 29.2 lb)
KBIA2473E

FUEL INJECTOR AND FUEL TUBE
EM-31
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: August 20072004 QX56

Handle O-ring with bare hands. Never 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 angle or twist it.
3. Install the fuel injector to the fuel tube using the following steps.
a. Insert new clip into clip mounting groove on the fuel injector.

Insert clip so that lug “A” of fuel injector matches notch “A” of
the clip.
CAUTION:

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

Do not allow the clip to interfere with the O-ring. If
interference occurs, replace the O-ring.
b. Insert the fuel injector into the fuel tube with the clip attached.

Insert it while matching it to the axial center.

Insert fuel injector so that lug “B” of fuel tube matches notch
“B” of the clip.

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

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

Tighten fuel tube assembly bolts “a” to “b” in illustration in two
steps.
5. Install the fuel hose assembly.

Insert connectors straight, making sure that the axis is lined up with fuel tube side to prevent O-ring
from being damaged.

Tighten the bolts evenly in several steps.

Make sure that there is no gap between the flange and fuel tube after tightening the bolts.
CAUTION:

Handle O-ring with bare hands. Do not wear gloves.Fuel tube side : Blue
Nozzle side : Brown
KBIA2507E
1st step : 12.8 N·m (1.3 kg-m, 9 ft-lb)
2nd step : 24.5 N·m (2.5 kg-m, 18 ft-lb)
KBIA2474E

EM-32Revision: August 2007
FUEL INJECTOR AND FUEL TUBE
2004 QX56

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.
6. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
After installing the fuel tubes, make sure there are no fuel leaks at the connections using the following steps.
1. Apply fuel pressure to the fuel lines by turning the ignition switch ON (with engine stopped). Then check
for fuel leaks at the connections.
NOTE:
Use mirrors for checking on hidden points.
2. Start the engine and rev it up and check for fuel leaks at connections.
CAUTION:
Do not touch the engine immediately after stopping, as engine becomes extremely hot.