Nissan Altima L32. Instruction — part 645

EM-116

< PREPARATION >

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PREPARATION

Valve guide reamer

Reaming valve guide 1 or hole for oversize
valve guide 2
Intake & Exhaust:
d

1

: 6.0 mm (0.236 in) dia.

d

2

: 10.2 mm (0.402 in) dia.

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

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

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

Lubricating oxygen sensor thread cleaning
tool when reconditioning exhaust system
threads

T55 Torx® Plus Bit

Removing and installing M/T flywheel bolts

(Kent-Moore No.)
Tool name

Description

NT016

AEM488

AEM489

PBIC1113E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

EM-117

< FUNCTION DIAGNOSIS >

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FUNCTION DIAGNOSIS

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

INFOID:0000000004202148

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1.

Camshaft bearing noise

2.

Piston pin noise

3.

Piston slap noise

4.

Main bearing noise

5.

Connecting rod bearing noise

6.

Drive belt noise (Sticking/Slipping)

7.

Drive belt noise (Slipping) 8.

Water pump noise

9.

Timing chain and chain tensioner noise

EM-118

< FUNCTION DIAGNOSIS >

[VQ35DE]

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

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

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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. Repair or replace the identified part as necessary.

A: Closely related B: Related C: Sometimes related —: Not related

10. Tappet noise

A.

Valve

B.

Valve mechanism

C.

Rotation mechanism

D.

Drive belt

E.

Timing chain

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 en-
gine
Rocker
cover
Cylinder
head

Ticking or
clicking

C

A

—

A

B

—

Tappet
noise

Valve clearance

EM-124

Rattle

C

A

—

A

B

C

Camshaft
bearing
noise

Camshaft journal clear-
ance
Camshaft runout

EM-177

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 bushing
clearance

EM-128

Slap or
rap

A

—

—

B

B

A

Piston
slap noise

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

EM-206

Knock

A

B

C

B

B

B

Connect-
ing rod
bearing
noise

Connecting rod bushing
clearance (Small end)
Connecting rod bearing
clearance (Big end)

EM-206

Knock

A

B

—

A

B

C

Main bear-
ing noise

Main bearing oil clear-
ance
Crankshaft runout

EM-206

Front of
engine
Timing
chain cov-
er

Tapping or
ticking

A

A

—

B

B

B

Timing
chain and
chain ten-
sioner
noise

Timing chain cracks
and wear
Timing chain tensioner
operation

EM-162

Front of
engine

Squeak-
ing or fizz-
ing

A

B

—

B

—

C

Drive belts
(Sticking
or slip-
ping)

Drive belts deflection

EM-121

Creaking

A

B

A

B

A

B

Drive belts
(Slipping)

Idler pulley bearing op-
eration

Squall
Creak

A

B

—

B

A

B

Water
pump
noise

Water pump operation

CO-42

SPARK PLUG

EM-119

< ON-VEHICLE MAINTENANCE >

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ON-VEHICLE MAINTENANCE

SPARK PLUG

Removal and Installation

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REMOVAL

1. Remove the ignition coil. Refer to

EM-145, "Removal and Installation LH"

and

EM-145, "Removal and

Installation RH"

.

2. Remove the spark plug with a suitable spark plug wrench.

INSPECTION AFTER REMOVAL

1.

Ignition coil

2.

Spark plug

3.

Rocker cover RH

4.

Rocker cover LH

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PBIC2982E