Infiniti M45 (Y34). Manual — part 518

PREPARATION

EM-9

C

D

E

F

G

H

I

J

K

L

M

A

EM

(J-43897-18)
(J-43897-12)
Oxygen sensor thread cleaner

Reconditioning the exhaust system threads
before installing a new heated oxygen
sensor (Use with anti-seize lubricant shown
below.)
a: J-43897-18 (18 mm dia.) for zirconia
heated oxygen sensor
b: J-43897-12 (12 mm dia.) for titania
heated oxygen sensor

Anti-seize lubricant (Permatex 133AR
or equivalent meeting MIL
specification MIL-A-907)

Lubricating heated oxygen sensor thread
cleaning tool when reconditioning exhaust
system threads

(Kent-Moore No.)
Tool name

Description

AEM488

AEM489

EM-10

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

NVH Troubleshooting —Engine Noise

ABS000LE

PBIC2672E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING

EM-11

C

D

E

F

G

H

I

J

K

L

M

A

EM

Use the Chart Below to Help You Find the Cause of the Symptom.

ABS000LF

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

Type of

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-55

Rattle

C

A

—

A

B

C

Camshaft
bearing noise

Camshaft journal oil
clearance
Camshaft runout

EM-51
EM-50

Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil pan

Slap or
knock

—

A

—

B

B

—

Piston pin
noise

Piston and piston pin
clearance
Connecting rod bush-
ing clearance

EM-96
EM-98

Slap or
rap

A

—

—

B

B

A

Piston slap
noise

Piston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion

EM-100
EM-97
EM-97
EM-98

Knock

A

B

C

B

B

B

Connecting
rod bearing
noise

Connecting rod bush-
ing clearance
Connecting rod bear-
ing oil clearance

EM-98
EM-103

Knock

A

B

—

A

B

C

Main bearing
noise

Main bearing oil clear-
ance
Crankshaft runout

EM-103
EM-102

Front of
engine
Front
cover

Tapping or
ticking

A

A

—

B

B

B

Timing chain
and chain
tensioner
noise

Timing chain cracks
and wear
Chain tensioner opera-
tion

EM-42
EM-38

Front of
engine

Squeak-
ing or fizz-
ing

A

B

—

B

—

C

Drive belts
(Sticking or
slipping)

Drive belts deflection

EM-13

Creaking

A

B

A

B

A

B

Drive belts
(Slipping)

Idler pulley bearing
operation

Squall
Creak

A

B

—

B

A

B

Water pump
noise

Water pump operation

CO-23,
"INSPEC-
TION
AFTER
REMOVA
L"

EM-12

ENGINE ROOM COVER

ENGINE ROOM COVER

PFP:14049

Removal and Installation

ABS000LG

REMOVAL

●

Remove clips on back with clip driver for front air guide.

CAUTION:

Do not damage or scratch cover when installing or removing.

●

Major parts and inspection points under each cover are as follows; (numbered as in illustration)

1.

Upper side of engine assembly, power steering reservoir tank, cooling fan reservoir tank

2.

Relay

3.

Cooling fan fluid cooler, power steering fluid cooling tube

4.

Engine assembly front side, drive belts, cooling fan

INSTALLATION

●

Install in the reverse order of removal.

1.

Engine cover

2.

Relay box

3.

Front air guide

4.

Air duct (inlet)

PBIC2724E