2004 INFINITI FX35 check oil

TIMING CHAIN
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4. Install timing chains and related parts.

Align the mating mark on each sprocket and timing chain for installation.
CAUTION:
For the above reason, after the mating marks are aligned, keep them aligned by holding them
with a hand.
NOTE:
Before installing chain tensioner, it is possible to change the position of mating mark on timing chain for
that on each sprocket for alignment.

Install slack guides and tension guides onto correct side by checking with identification mark on sur-
face.

Install chain tensioner with plunger fixed as described in its removal.
CAUTION:

Before and after the installation of chain tensioner, make sure that the mating mark on timing
chain is not out of alignment.

After installing chain tensioner, remove stopper pin to release tensioner. Make sure tensioner
is released.

To avoid chain-link skipping of timing chain, do not move crankshaft or camshafts until front
cover is installed.
5. Perform the same procedure as for right bank, install timing chain and related parts on left side.
6. Install oil pump. Refer to LU-31, "
OIL PUMP" .
PBIC2344E

TIMING CHAIN
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Revision: 2004 November 2004 FX35/FX45
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

Before starting engine, check the levels of engine coolant, lubrications and working fluid. If less than
required quantity, fill to the specified level.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil and working
fluid, fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
PBIC2346E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level

EM-224
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CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
CYLINDER HEADPFP:11041
On-Vehicle ServiceABS006IP
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Release fuel pressure. Refer to EC-700, "
FUEL PRESSURE RELEASE" .
a. Remove fuel pump fuse to avoid fuel injection during measure-
ment.
3. Remove engine cover with power tool. Refer to EM-168, "
ENGINE ROOM COVER" .
4. Remove ignition coil and spark plug from each cylinder. Refer to EM-185, "
IGNITION COIL" and EM-186,
"SPARK PLUG (PLATINUM-TIPPED TYPE)" .
5. Connect engine tachometer (not required in use of CONSULT-II).
6. Install compression gauge with adapter (SST or commercial ser-
vice tool) onto spark plug hole.

Use compression gauge adapter (SST) which is required on
No. 7 and No. 8 cylinders.

Use compression gauge adapter (if no SST is used) 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 cyl-
inder head during removal.
7. 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.
PBIB1482E
PBIC1554E
SBIA0533E
Standard Minimum Deferential limit between cylinders
1,320 (13.5, 191) / 300 1,130 (11.5, 164) / 300 98 (1.0, 14) / 300

CYLINDER HEAD
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Revision: 2004 November 2004 FX35/FX45

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, gaskets are leaking. In such a case, replace cylinder head gas-
kets.
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-726, "
TROUBLE DIAGNOSIS" .
Removal and InstallationABS006IQ
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-236, "ENGINE ASSEMBLY" .
2. Remove exhaust manifold. Refer to EM-178, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
3. Remove camshaft. Refer to EM-208, "
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)
PBIC2407E

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CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
4. Remove cylinder head bolts in reverse order as shown in the fig-
ure with cylinder head bolt wrench (commercial service tool).
5. Remove cylinder head gaskets.
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Outer Diameter

Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between “d1” and “d2”
exceeds the limit, replace them with new one.

If reduction of outer diameter appears in a position other than
“d2”, use it as “d2” point.
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checking. Refer to EM-259, "
CYLIN-
DER BLOCK DISTORTION" .
1. Using scraper, wipe off oil, scale, gasket, sealant and carbon deposits from surface of cylinder head.
CAUTION:
Do not allow gasket fragments to enter engine oil or engine coolant passages.
2. At each of several locations on bottom surface of cylinder head,
measure distortion in six directions.

If it exceeds the limit, replace cylinder head.
INSTALLATION
1. Install cylinder head gasket.
2. Turn crankshaft until No. 1 piston is set at TDC.
PBIC0068E
Limit (“d1” - “d2”) : 0.18 mm (0.0071 in)
PBIC2361E
Limit : 0.1 mm (0.004 in)
PBIC0075E

CYLINDER HEAD
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Crankshaft key should line up with the left bank cylinder cen-
ter line as shown in the figure.
3. Install cylinder head follow the steps below to tighten cylinder
head bolts in numerical order as shown in the figure.
CAUTION:
If cylinder head bolts are re-used, check their outer diame-
ters before installation. Refer to EM-226, "
Cylinder Head
Bolts Outer Diameter" .
a. Apply engine oil to threads and seating surface of cylinder head
bolts.
b. Tighten all bolts. 98.1 N·m (10 kg-m, 72 ft-lb).
c. Completely loosen all bolts.
CAUTION:
In step “c”, loosen bolts in reverse order of that indicated in the figure.
d. Tighten all bolts to 44.1 N·m (4.5 kg-m, 33 ft-lb).
e. Turn all bolts 60 degrees clockwise. (Angle tightening)
CAUTION:
Check and confirm the tightening angle by using angle
wrench (SST) and cylinder head bolt wrench (commercial
service tool). Avoid judgment by visual inspection without
SST.
f. Turn all bolts 60 degrees clockwise again. (Angle tightening)
4. Install in the reverse order of removal after this step.
PBIC2389E
: 98.1 N·m (10 kg-m, 72 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 44 N·m (4.5 kg-m, 33 ft-lb)PBIC0068E
PBIC0069E

EM-232
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CYLINDER HEAD
Revision: 2004 November 2004 FX35/FX45
3. Using valve guide reamer (commercial service tool), ream cylin-
der head valve guide hole.
4. Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in
heated oil.
5. Press valve guide from camshaft side to dimensions as in the
figure.
CAUTION:
Cylinder head contains heat. When working, wear protec-
tive equipment to avoid getting burned.
6. Using valve guide reamer (commercial service tool), apply
reamer finish to valve guide.
VALVE SEAT CONTACT

After confirming that the dimensions of valve guides and valves
are within specifications, perform this procedure.

Apply prussian blue (or white lead) onto contacting surface of
valve seat to check the condition of the valve contact on the sur-
face.

Check if the contact area band is continuous all around the cir-
cumference.

If not, grind to adjust valve fitting and check again. If the contact-
ing surface still has NG conditions even after the re-check,
replace valve seat.Valve guide hole diameter (for service parts):
Intake and exhaust
: 10.175 - 10.196 mm (0.4006 - 0.4014 in)
SEM932C
SEM008A
PBIC0078E
Standard:
Intake and exhaust
: 6.000 - 6.018 mm (0.2362 - 0.2369 in)
SEM932C
SBIA0322E

EM-238
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ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45

After disconnection, plug the opening on transmission side.
11. Remove front drive shaft (both side). Refer to FAX-12, "
FRONT DRIVE SHAFT" .
12. Remove front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
13. Remove three way catalyst (both bank). Refer to EM-178, "
EXHAUST MANIFOLD AND THREE WAY
CATALYST" .
Removal Work
1. Install engine slingers into front of left bank cylinder head and
front of right bank cylinder head.
2. Lift with hoist and secure engine in position.
3. Use manual lift table caddy (commercial service tool) or equivalently rigid tool such as transmission jack.
Securely support bottom of suspension member and transmission.
CAUTION:
Put a piece of wood or something similar as the supporting surface, secure a completely stable
condition.
4. Remove front suspension member mounting nuts with power tool. Refer to FSU-6, "
FRONT SUSPEN-
SION ASSEMBLY" .
5. Carefully lower jack, or raise lift to remove engine, transmission
front final drive and front suspension member assembly. When
performing work, observe the following caution:
CAUTION:

Confirm there is no interference with vehicle.

Make sure that all connection points have been discon-
nected.

Keep in mind the center of vehicle gravity changes. If
necessary, use jack(s) to support vehicle at rear jacking
point(s) to prevent it from falling it off the lift.
Separation Work
1. Change engine slinger installing to cylinder head (right bank).
NOTE:
In order to keep secure position when hoisting engine.
2. Remove engine mounting insulators (RH and LH) under side nut with power tool.
3. Lift with hoist and separate engine and transmission assembly from front suspension member.
CAUTION:

Before and during this lifting, always check if any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
4. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" . Slinger bolts:
:33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC1556E
PBIC1557E
Slinger bolts:
:33.4 N·m (3.4 kg-m, 25 ft-lb)
PBIC2447E