Nissan Altima L32. Manual - part 645

EM-116

< PREPARATION >

[VQ35DE]

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 >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

FUNCTION DIAGNOSIS

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH Troubleshooting - Engine Noise

INFOID:0000000004202148

AWBIA0022ZZ

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

INFOID:0000000004202149

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 >

[VQ35DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

ON-VEHICLE MAINTENANCE

SPARK PLUG

Removal and Installation

INFOID:0000000004202150

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

AWBIA0203GB

PBIC2982E