2005 INFINITI FX35 low oil pressure

ENGINE ASSEMBLY EM-121
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Revision: 2005 July 2005 FX

Do not allow engine mounting insulator to be damage and careful no engine oil gets on it.

For a location with a positioning pin, insert it securely into hole of mating part.

For a part with a specified installation orientation, refer to component figure in EM-117, "Components
(AWD Model)" .

When installing engine mounting bracket (RH and LH) on cylin-
der block, tighten two upper bolts (shown as “A” in the figure)
first. Then tighten two lower bolts (shown as “B” in the figure).

Install engine mounting bracket (RH) (lower) as follows:
–Temporarily tighten mounting bolts (shown as “C”, “D” and “E” in
the figure).
–Tighten mounting bolts to the specified torque with following
mounting surfaces touched.
 Engine mounting bracket (RH) to engine mounting bracket (RH) (lower) (shown as “C” and “D” in figure).
 Front final drive to engine mounting bracket (RH) (lower) (shown as “E” in figure).

Make sure all engine mounting insulators are seated properly,
then tighten mounting nuts.
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-12, "
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.

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.
PBIC3042E
Item 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 —

PRECAUTIONS EM-163
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[VK45DE]PRECAUTIONSPFP:00001
Precautions Necessary for Steering Wheel Rotation After Battery DisconnectABS00DB1
NOTE:

This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).

Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″ LOCK ″ position.

Always use CONSULT-II to perform self-diagnosis as a part of each function inspection after finishing
work. If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK ″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-II.
Precautions for Drain Engine Coolant and Engine OilABS006HV
Drain engine coolant and engne oil when engine is cooled.
Precautions for Disconnecting Fuel PipingABS006HW

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 DisassemblyABS006HX

When instructed to use SST, use specified tools. Always be careful to work safely, avoid forceful or unin-
structed operations.

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

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

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

When loosening nuts and bolts, 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 where noted in the step.
Precautions for Inspection, Repair and ReplacementABS006HY
Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precautions for Assembly and InstallationABS006HZ

Use torque wrench to tighten bolts or nuts to specification.

EM-196
[VK45DE]
FUEL INJECTOR AND FUEL TUBE
Revision: 2005 July 2005 FX

Tighten mounting bolts in two steps in numerical order as
shown in the figure.
6. Connect fuel feed hose on engine side as the following: (Excepting to confirm whether or not there is quick connector cap, perform same procedure for the side of centralized under-floor piping as well.)
a. Make sure no foreign substances are deposited in and around fuel tube and quick connector, and no dam- age on them.
b. Thinly apply new engine oil around fuel tube from tip end to spool end.
c. Align center to insert quick connector straightly into fuel tube.

Insert fuel tube into quick connector until top spool is com-
pletely inside quick connector, and 2nd level spool exposes
right below quick connector.
CAUTION:

Hold “A” position as shown in the figure when inserting
fuel tube 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 fuel tube.
e. Install quick connector cap on quick connector connection. (on engine side only).
CAUTION:
If cap cannot be installed smoothly, quick connector may
have not been installed correctly. Check connection again.
f. Install fuel feed hose to hose clamps.
7. 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. 1st step : 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step : 23.5 N·m (2.4 kg-m, 17 ft-lb)
PBIC2338E
KBIA0272E
SBIA0354E

ROCKER COVER EM-197
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ROCKER COVERPFP:13264
ComponentsABS00DFU
Removal and InstallationABS006II
REMOVAL
1. Remove engine cover with power tool. Refer to EM-172, "ENGINE ROOM COVER" .
2. Release the fuel pressure. Refer to EC-789, "
FUEL PRESSURE RELEASE" .
3. Refer to the following for incidental works related to left bank.
a. Remove air duct (inlet), air cleaner case and mass air flow sensor assembly, air duct and resonator assembly. Refer to EM-176, "
AIR CLEANER AND AIR DUCT" .
b. Move harness on upper rocker cover and its peripheral aside.
c. Remove harness brackets from camshaft bracket (No. 6). Refer to EM-212, "
CAMSHAFT" .
d. Remove electric throttle control actuator. Refer to EM-178, "
INTAKE MANIFOLD" .
e. Remove ignition coil. Refer to EM-189, "
IGNITION COIL" .
f. Remove PCV hose from PCV valve.
4. Refer to the following for incidental works related to right bank.
a. Move harness on upper rocker cover and its peripheral aside.
b. Remove ignition coil EM-189, "
IGNITION COIL" .
c. Remove PCV hose from PCV valve.
5. Remove PCV valves and O-rings from rocker covers (right and left bank), if necessary.
6. Remove oil filler cap and oil catcher from rocker cover (right bank), if necessary.
1. Rocker cover (left bank) 2. PCV valve 3. O-ring
4. Rocker cover gasket (left bank) 5. Rocker cover (right bank) 6. PCV valve
7. O-ring 8. Oil filler cap 9. Oil catcher
10. Rocker cover gasket (right bank)
PBIC2353E

TIMING CHAIN EM-211
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f. Further tighten by 90 degrees. (Angle tightening)

Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
15. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns smoothly.
16. Install in the reverse order of removal after this step. NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The followings 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-12, "
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.

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.
PBIC2346E
Item 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 —

EM-218
[VK45DE]
CAMSHAFT
Revision: 2005 July 2005 FX
4. Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown in the figure.
a. Tighten No. 9 to 12 in numerical order as shown.
b. Tighten No. 1 to 8 in numerical order as shown.
c. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
d. Tighten all bolts in numerical order as shown.
e. Tighten No. 1 to 12 in numerical order as shown.
f. Tighten No. 13 to 14 in numerical order as shown. (Left bank only)
CAUTION:
After tightening mounting bolts of camshaft brackets, be sure to wipe off excessive liquid gasket
from the parts listed below.

Mating surface of rocker cover

Mating surface of front cover
5. Install camshaft sprockets.

Install by checking with identification mark on surface.

Instal camshaft sprocket (EXH) by selectively using the
groove of dowel pin according to the bank. (Common part
used for both banks.)

Lock the hexagonal part of camshaft in the same way as for
removal, and tighten mounting bolts.
6. Check and adjust the valve clearance. Refer to EM-219, "
Valve Clearance" .
7. 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 and/or P0021 are detected in self-diagnostic results
of CONSULT-II and it is directed according to inspection procedure of EC section. Refer to EC-791,
"TROUBLE DIAGNOSIS" .

Check when the engine is cold so as to prevent burns from any splashing engine oil.
1. Check the engine oil level. Refer to LU-25, "
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-789, "
FUEL PRESSURE RELEASE" .
b. Disconnect ignition coil and injector harness connectors.
3. Remove intake valve timing control solenoid valve. Refer to EM-200, "
TIMING CHAIN" .
: 1.96 N·m (0.2 kg-m, 1 ft-lb)
: 1.96 N·m (0.2 kg-m, 1 ft-lb)
: 1.96 N·m (0.2 kg-m, 1 ft-lb)
: 5.88 N·m (0.6 kg-m, 4 ft-lb)
: 10.41 N·m (1.1 kg-m, 8 ft-lb)
: 31.35 N·m (3.2 kg-m, 23 ft-lb)
PBIC0031E
PBIC2345E

EM-230
[VK45DE]
CYLINDER HEAD
Revision: 2005 July 2005 FX

If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity.

If compression pressure is below minimum value, check valve clearances and parts associated with
combustion chamber (valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure compression pressure again.

If some cylinders have low compression pressure, pour small amount of engine oil into the spark plug
hole of the cylinder to re-check it for compression.
–If the added engine oil improves the compression, piston rings may be worn out or damaged. Check the
piston rings and replace if necessary.
–If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-
functioning. Check valves for damage. Replace valve or valve seat accordingly.

If two adjacent cylinders have respectively low compression pressure and their compression remains
low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case, replace cyl-
inder head gaskets.
8. After inspection is completed, install removed parts in the reverse order of removal.
9. Start engine, and make sure that engine runs smoothly.
10. Perform trouble diagnosis. If DTC appears, erase it. Refer to EC-791, "
TROUBLE DIAGNOSIS" .
ComponentsABS00DFX
Removal and InstallationABS006IQ
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-240, "ENGINE ASSEMBLY" .
2. Remove exhaust manifold. Refer to EM-182, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
3. Remove camshaft. Refer to EM-212, "
CAMSHAFT" .
1. Engine coolant temperature sensor 2. Washer 3. Cylinder head gasket (left bank)
4. Harness bracket 5. Cylinder head (right bank) 6. Cylinder head bolt
7. Cylinder head gasket (right bank) 8. Cylinder head bolt 9. Cylinder head (left bank)
PBIC2756E

ENGINE ASSEMBLY EM-241
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Preparation
1. Release fuel pressure. Refer to EC-789, "FUEL PRESSURE RELEASE" .
2. Drain engine coolant from radiator. Refer to CO-37, "
Changing Engine Coolant" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
3. Disconnect both battery terminal. Refer to SC-4, "
BATTERY" .
4. Remove crankshaft position sensor (POS) from transmission. CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at sensor tip.

Do not place sensors in a location where they are exposed to magnetism.
5. Remove the following parts:

Hood assembly; Refer to BL-13, "HOOD" .

Engine cover; Refer to EM-172, "ENGINE ROOM COVER" .

Front and rear engine undercover

Air duct (inlet), air duct and air cleaner case assembly; Refer to EM-176, "AIR CLEANER AND AIR
DUCT" .

Drive belts; Refer to EM-173, "DRIVE BELTS" .

Radiator and radiator hoses (upper and lower); Refer to CO-41, "RADIATOR" .

Front road wheels and tires
Engine Room LH
1. Disconnect engine room harness from the engine side and set it aside for easier work.
2. Disconnect heater hoses, and install plugs to avoid leakage of engine coolant.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Discharge refrigerant from A/C circuit. Refer to ATC-138, "
REFRIGERANT LINES" .
6. Remove A/C piping from A/C compressor, and temporarily fasten it on vehicle with a rope. Refer to AT C -
140, "Components" .
Engine Room RH
1. Disconnect fuel feed hose and EVAP hose. Refer to EM-192, "FUEL INJECTOR AND FUEL TUBE" .
CAUTION:
Fit plugs onto disconnected hose to prevent fuel leak.
2. Disconnect engine room harness from the engine side and set it aside for easier work.
3. Disconnect ground cable from exhaust manifold cover to vehicle.
4. Disconnect vacuum hose between vehicle and engine and set it aside.
5. Disconnect reservoir tank of power steering oil pump from engine, and move it aside for easier work. CAUTION:
When temporarily securing, keep reservoir tank upright to avoid a fluid leak.
Vehicle Underbody
1. Remove front cross bar. Refer to FSU-6, "FRONT SUSPENSION ASSEMBLY" .
2. Disconnect power steering oil pump from engine. Move it from its location and secure with a rope for eas- ier work. Refer to PS-33, "
Removal and Installation (VK45DE Models)" .
3. Remove A/T fluid cooler tube. Refer to AT- 2 7 0 , "
TRANSMISSION ASSEMBLY" .
4. Remove exhaust front tube and center muffler with power tool. Refer to EX-3, "
EXHAUST SYSTEM" .
5. Remove RH and LH transverse link mounting bolts and nuts. Refer to FSU-14, "
TRANSVERSE LINK" .
6. Disconnect stabilizer connecting rod lower. Refer to FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
7. Remove A/T control rod at control device assembly side. Then temporarily secure it on transmission, so that it does not sag. Refer to AT- 2 3 3 , "
SHIFT CONTROL SYSTEM" .