2005 INFINITI FX35 check engine

CYLINDER BLOCK EM-129
[VQ35DE]
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Revision: 2005 July 2005 FX

Tighten each plug as specified below.
3. Install oil jet.

Insert oil jet dowel pin into cylinder block dowel pin hole, and
tighten mounting bolts.
4. Install main bearings and thrust bearings as follows: CAUTION:
Be careful not to drop main bearing, and to scratch the surface.
a. Remove dust, dirt, and engine oil on bearing mating surfaces of cylinder block and main bearing caps.
b. Install thrust bearings to the both sides of the No. 3 journal hous- ing on cylinder block and main bearing cap.

Install thrust bearings with the oil groove facing crankshaft
arm (outside).

Install thrust bearing with a protrusion on one end on cylinder
block, and thrust bearing with a protrusion at center on main
bearing cap. Align each protrusion with mating notch.
c. Install main bearings paying attention to the direction.

Main bearing with oil hole and groove goes on cylinder block.
The one without them goes on main bearing cap.

Before installing main bearings, apply engine oil to the bear-
ing surface (inside). Do not apply engine oil to the back sur-
face, but thoroughly clean it.

When installing, align main bearing stopper protrusion to cut-
out of cylinder block and main bearing caps.

Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
5. Install crankshaft to cylinder block.

While turning crankshaft by hand, check that it turns smoothly.
6. Install main bearing cap.
Part Washer Tightening torque
A No 9.8 N·m (1.0 kg-m, 87 in-lb)
B No 19.6 N·m (2.0 kg-m, 14 ft-lb)
C No 19.6 N·m (2.0 kg-m, 14 ft-lb)
D Yes 12.3 N·m (1.3 kg-m, 9 ft-lb) E Yes 62 N·m (6.3 kg-m, 46 ft-lb) F Yes 62 N·m (6.3 kg-m, 46 ft-lb)
PBIC0898E
PBIC0807E
PBIC2489E

EM-130
[VQ35DE]
CYLINDER BLOCK
Revision: 2005 July 2005 FX

Main bearing caps are identified by identification mark cast on
them. For installation, face front mark to front side.
NOTE:
Main bearing cap cannot be replaced as a single part, because it
is machined together with cylinder block.
7. Install main bearing beam.

Install main bearing beam with front mark facing downward (oil pan side).

Install main bearing beam with front mark facing front of the
engine.
8. Install main bearing cap bolts in numerical order as shown in the figure as follows:
a. Inspect the outer diameter of main bearing cap bolt. Refer to EM-148, "
MAIN BEARING CAP BOLT OUTER DIAMETER" .
b. Apply new engine oil to threads and seat surfaces of main bear- ing cap bolts.
c. Tighten main bearing cap bolts in several different steps.
d. Turn all main bearing cap bolts 90 degrees clockwise (Angle tightening).
CAUTION:
Use the angle wrench [SST: KV10112100 (BT8653-A)] to
check tightening angle. Do not make judgment by visual
inspection.

After installing main bearing cap bolts, make sure that crank-
shaft can be rotated smoothly by hand.

Check the crankshaft end play. Refer to EM-140, "CRANK-
SHAFT END PLAY" .
9. Install piston to connecting rod as follows:
a. Using a snap ring pliers, install new snap ring to the groove of piston rear side.

Insert it fully into groove to install.
b. Install piston to connecting rod.

Using an industrial use drier or similar tool, heat piston until piston pin can be pushed in by hand without
excess force [approx. 60 to 70 °C (140 to 158 °F)]. From the front to the rear, insert piston pin into piston
and connecting rod.
SEM456G
PBIC0881E
: 35.3 N·m (3.6 kg-m, 26 ft-lb)
PBIC1800E
PBIC0921E

CYLINDER BLOCK EM-131
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Revision: 2005 July 2005 FX

Assemble so that the front mark on the piston head and the
cylinder number on connecting rod are positioned as shown in
the figure.
c. Install new snap ring to the groove of the piston front side.

Insert it fully into groove to install.

After installing, make sure that connecting rod moves
smoothly.
10. Using a piston ring expander (commercial service tool), install piston rings.
CAUTION:

When installing piston rings, be careful not to damage
piston.

Be careful not to damage piston rings by expending them
excessively.

If there is stamped mark on ring, mount it with marked side
up.
NOTE:
If there is no stamp on ring, no specific orientation is required
for installation.

Position each ring with the gap as shown in the figure refer-
ring to the piston front mark.

Check the piston ring side clearance. Refer to EM-141, "PISTON RING SIDE CLEARANCE" .
11. Install connecting rod bearings to connecting rod and connecting rod bearing cap. CAUTION:
Be careful not to drop connecting rod bearing, and to scratch the surface.

Before installing connecting rod bearings, apply engine oil to the bearing surface (inside). Do not apply
engine oil to the back surface, but thoroughly clean it.
SEM838F
PBIC0087E
Stamped mark:
To p r i n g : —
Second ring : “R”
SEM757G
PBIC0808E

CYLINDER BLOCK EM-133
[VQ35DE]
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Revision: 2005 July 2005 FX
d. Then tighten all connecting rod bolts 90 degrees clockwise
(Angle tightening).
CAUTION:
Always use the angle wrench [SST: KV10112100 (BT8653-
A)]. Avoid tightening based on visual check alone.

After tightening connecting rod bolts, make sure that crank-
shaft rotates smoothly.

Check the connecting rod side clearance. Refer to EM-140,
"CONNECTING ROD SIDE CLEARANCE" .
15. Install baffle plate to main bearing beam (2WD models).
16. Install new rear oil seal retainer to cylinder block.

Apply new engine oil to both oil seal lip and dust seal lip.

Apply a continuous bead of liquid gasket with the tube presser
[SST: WS39930000 ( — )] to rear oil seal retainer as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
CAUTION:

Replace with a new parts.

Attaching should be done within 5 minutes after coating.

Make sure the garter spring is in position and seal lips
not inverted.
NOTE:
Regard both rear oil seal and retainer as an assembly.
17. Install pilot converter.

With a drift [outer diameter: approx. 33 mm (1.30 in)], press-fit
as far as it will go.

Press-fit pilot converter with its chamfer facing crankshaft as
shown in the figure.
SEM953E
PBIC2661E
PBIC0899E
SEM537E

PRECAUTIONS EM-163
[VK45DE]
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Revision: 2005 July 2005 FX
[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-164
[VK45DE]
PRECAUTIONS
Revision: 2005 July 2005 FX

When tightening nuts and bolts, 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.

Thoroughly wash, clean, and air-blow each part. Carefully check engine oil or engine coolant passages for
any restriction and blockage.

Guide pins are used for several parts alignment. When replacing and reassembling parts with guide pins,
make sure that guide pins are installed in the original portion.

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.

After repairing, start engine and increase engine speed to check engine coolant, fuel, engine oil, and
exhaust gases for leakage.
Parts Requiring Angle TighteningABS006I0

Use angle wrench [SST: KV10112100 (BT8653-A)] for the final tightening of the following engine parts:
–Cylinder head bolts
–Main bearing cap bolts
–Connecting rod cap nuts
–Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angle
tightening)

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 GasketABS006I1
REMOVAL OF LIQUID GASKET SEALING

After removing mounting nuts and bolts, 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 liquid gasket application surface and the mating surface.

Remove liquid gasket completely from the groove of the liquid
gasket 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.
PBIC0002E
PBIC0003E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING EM-171
[VK45DE]
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Revision: 2005 July 2005 FX
Use the Chart Below to Help You Find the Cause of the Symptom.ABS006I5
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not related Location
of noise Ty p e o f
noise Operating condition of engine
Source of noise Check item Refer-
ence page
Before
warm- up After
warm- up When
start- ing When
idling When
racing While
driving
Top of
engine
Rocker
cover
Cylinder
head Ticking or
clicking C A — A B — Tappet noise Valve clearance
EM-219
Rattle C A — A B C Camshaft
bearing noise Camshaft journal oil
clearance
Camshaft runout EM-214EM-213
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan Slap or
knock —A—B B— Piston pin
noise Piston to piston pin oil
clearance
Connecting rod bush-
ing oil clearance EM-262
EM-264
Slap or
rap A——BBA Piston slap
noise Piston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-266EM-263
EM-263
EM-264
Knock ABCBBB
Connecting
rod bearing
noise Connecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearance EM-264EM-269
Knock A B — A B C
Main bearing
noise Main bearing oil clear-
ance
Crankshaft runout EM-270EM-268
Front of
engine
front cover Tapping or
ticking AA—BBB Timing chain
and chain
tensioner
noise Timing chain cracks
and wear
Timing chain tensioner
operation EM-205
EM-200
Front of
engine Squeak-
ing or fizz-
ing AB—B—C Drive belts
(Sticking or
slipping) Drive belts deflection
EM-173Creaking A B A B A B Drive belts
(Slipping) Idler pulley bearing
operation
Squall
Creak AB—BAB Water pump
noise Water pump operation CO-51,
"WATER
PUMP"

DRIVE BELTS EM-173
[VK45DE]
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Revision: 2005 July 2005 FX
DRIVE BELTSPFP:02117
ComponentsABS00DFL
Checking Drive BeltsABS006I7
WARNING:
Be sure to perform when engine is stopped.

Remove air duct (inlet) when inspecting drive belt for alternator, water pump and A/C compressor.

Remove front engine undercover with power tool when inspecting power steering oil pump belt.

Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range
(between three line notches).
NOTE:

Check auto tensioner indication when engine is cold.

When new drive belt is installed, the range should be “A”.

The indicator notch is located on the moving side of auto tensioner for alternator, water pump and A/C
compressor belt, while it is found on the fixed side for power steering oil pump belt.

Visually check entire belt for wear, damage or cracks.

If the indicator is out of allowable working range or belt is damaged, replace belt.
Tension AdjustmentABS006I8
Belt tensioning is not necessary, as it is automatically adjusted by auto tensioner.
Removal and InstallationABS006I9
REMOVAL
Alternator, Water Pump and A/C Compressor Belt
1. Remove air duct (inlet). Refer to EM-176, "AIR CLEANER AND AIR DUCT" .
2. With box wrench, and while securely holding the hexagonal part in pulley center of auto tensioner, move wrench handle in the
direction of arrow (loosening direction of tensioner).
CAUTION:

Avoid placing hand in a location where pinching may
occur if the holding tool accidentally comes off.

Do not loosen the hexagonal part in center of drive belt
auto–tensioner pulley (Do not turn it clockwise). If turned
clockwise, the complete drive belt auto–tensioner must
be replaced as a unit, including the pulley.
PBIC2331E
PBIC2976E