Nissan versa HR15DE MR18DE NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
1.
|
Piston pin noise
|
2.
|
Piston slap noise
|
3.
|
Main bearing noise
|
4.
|
Water pump noise
|
5.
|
Timing chain and
tensioner noise
|
6.
|
Drive belt noise
(stick/slipping)
|
7.
|
Tappet
noise
|
8.
|
Camshaft bearing noise
|
9.
|
Connecting rod noise
|
A.
|
Rotational mechanism
|
B.
|
Water pump
|
C.
|
Timing chain
|
D.
|
Drive belt
|
E.
|
Crankshaft pulley
|
F.
|
A/C compressor
|
G.
|
Water pump
|
H.
|
Alternator
|
I.
|
Tension pulley
|
J.
|
Valve
mechanism
|
K.
|
Valves
|
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 engine.
4.
Check specified
noise source. If necessary, repair or replace these parts.
|
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Location
of noise |
Type of
noise |
Operating condition of engine
|
Source of
noise |
Check item
|
Refer-
ence page |
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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-107
|
|||
Rattle
|
C
|
A
|
—
|
A
|
B
|
C
|
Camshaft bearing noise
|
Camshaft journal
oil clearance
Camshaft runout
|
EM-49
|
|||
EM-49
|
||||||||||||
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-95
|
||
EM-97
|
||||||||||||
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-99
|
|||
EM-96
|
||||||||||||
EM-96
|
||||||||||||
EM-97
|
||||||||||||
Knock
|
A
|
B
|
C
|
B
|
B
|
B
|
Connect- ing rod bearing noise
|
Connecting
rod bush-ing oil clearance Connecting rod bear- ing oil clearance
|
EM-97
|
|||
EM-101
|
||||||||||||
Knock
|
A
|
B
|
—
|
A
|
B
|
C
|
Main bearing noise
|
Main bearing oil
clear- ance
Crankshaft runout
|
EM-101
|
|||
EM-100
|
||||||||||||
Front of engine Front
|
Tapping or ticking
|
A
|
cover
A
|
—
|
B
|
B
|
B
|
Timing chain and chain ten- sioner noise
|
Timing chain cracks
and wear
Timing chain tensioner
operation
|
EM-41
|
||
Front of
engine |
Squeak- ing or fizz-
|
A
|
B
|
ing
—
|
B
|
—
|
C
|
Drive belt (Sticking or
slip- ping)
|
Drive belt deflection
|
EM-13
|
||
Creaking
|
A
|
B
|
A
|
B
|
A
|
B
|
Drive belt (Slipping)
|
Idler pulley bearing operation
|
||||
Squall Creak
|
A
|
B
|
—
|
B
|
A
|
B
|
Water
pump noise |
Water pump operation
|
CO-17
|
|||
A:
Closely related B: Related C: Sometimes related —: Not related
Categories:
Engine Mechanical
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