Nissan Frontier D22. Manual — part 676

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

EM-11

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

PFP:00003

Noise, Vibration and Harshness (NVH)

EBS00GS5

AEM466

EM-12

[KA24DE]

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

NVH TROUBLESHOOTING CHART — ENGINE NOISE

Use the chart below to help you find the cause of the symptom.

1.

Locate the area where noise occurs.

2.

Confirm the type of noise.

3.

Specify the operating condition of the engine.

4.

Check the 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

Reference

page

Before

warm-

up

After

warm-

up

When

start-

ing

When

idling

Whe

n rev-

ving

While

driv-

ing

Top of
engine
Rocker
cover
Cylinder
head

Ticking or
clicking

C

A

—

A

B

—

Tappet
noise

Valve clearance

EM-37

Rattle

C

A

—

A

B

C

Camshaft
bearing
noise

Camshaft journal clearance
Camshaft runout

EM-36

Crank-
shaft pulley
Cylinder
block
(upper side
of engine)
Oil pan

Slap or
knock

—

A

—

B

B

—

Piston pin
noise

Piston and piston pin clear-
ance
Connecting rod bushing
clearance

EM-50

, or

EM-57

Slap or
rap

A

—

—

B

B

A

Piston slap
noise

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

EM-51

,

EM-51

,

EM-51

, or

EM-52

Knock

A

B

C

B

B

B

Connect-
ing rod-
bearing
noise

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

EM-56

, or

EM-57

Knock

A

B

—

A

B

C

Main bear-
ing noise

Crankshaft runout
Main bearing oil clearance

EM-53

, or

EM-54

Front of
engine
Timing
chain
cover

Tapping or
ticking

A

A

—

B

B

B

Timing
chain and
chain ten-
sioner
noise

Timing chain cracks and
wear

EM-24

Front of
engine

Squeak-
ing or fizz-
ing

A

B

—

B

—

C

Drive belts
(Sticking or
slipping)

Drive belt deflection

MA-16,
"DRIVE
BELT
DEFLEC-
TION AND
TENSION"

Creaking

A

B

A

B

A

B

Drive belts
(Slipping)

Idler pulley bearing opera-
tion

Squall
creak

A

B

—

B

A

B

Water
pump
noise

Water pump operation

CO-11,
"Inspec-
tion"

OUTER COMPONENT PARTS

EM-13

[KA24DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

OUTER COMPONENT PARTS

PFP:00100

Removal and Installation

EBS00GS6

Engine Outer Components

WBIA0232E

EM-14

[KA24DE]

OUTER COMPONENT PARTS

Ignition System Outer Components

1.

Throttle body

2.

EGR temperature sensor

3.

EGR valve

4.

EGR tube

5.

Oil dipstick

6.

Exhaust manifold

7.

Heated oxygen sensor 1

8.

Exhaust manifold cover

9.

TWC (manifold)

10. TWC (manifold) gaskets

11.

Exhaust manifold gaskets

12. Crankshaft pulley

13. Generator bracket

14. Generator

15. Water pump

16. Adjusting bar

17. Water pump pulley

18. Oil pressure switch

19. Oil filter

20. Oil filter bracket

21. Knock sensor

22. Water inlet

23. Thermostat

24. Intake manifold bracket

WBIA0180E

1.

Spark plug

2.

Ignition wires

3.

Camshaft position sensor built into
distributor

4.

EGR tube

5.

Exhaust manifold

6.

Heated oxygen sensor 1

7.

Exhaust manifold cover

8.

TWC (manifold)

9.

TWC (manifold) gaskets