NVH Troubleshooting Chart

WARNING: This page is about a different variant/trim than selected.

GNSDB121011

Courtesy of NISSAN NORTH AMERICA, INC.

1.	Timing chain	2.	Water pump	3.	Drive belt
A.	Tappet noise	B.	Camshaft bearing noise	C.	Valve mechanism
D.	Piston pin noise	E.	Piston slap noise	F.	Connecting rod bearing noise
G.	Rotation mechanism	H.	Main bearing noise	J.	VTC noise
K.	Timing chain and chain tensioner noise	L.	Water pump noise	M.	Drive belt noise

Locate the area where noise occurs.
Confirm the type of noise.
Specify the operating condition of engine.
Check specified noise source.

If necessary, repair or replace these parts.

Location of noise	Type of noise	Operating condition of engine						Source of noise	Check item	Reference
Location of noise	Type of noise	Before warm-up	After warm-up	When starting	When idling	When racing	While driving	Source of noise	Check item	Reference
Top of engine Rocker cover Cylinder head	Ticking or clicking	C	A	--	A	B	--	Tappet noise	Valve clearance	How to Check
Top of engine Rocker cover Cylinder head	Rattle	C	A	--	A	B	C	Camshaft bearing noise	Camshaft journal oil clearance Camshaft runout	Service Data
Crankshaft pulley Cylinder block (Side of engine) Oil pan	Slap or knock	--	A	--	B	B	--	Piston pin noise	Piston-to-piston pin oil clearance Connecting rod bushing oil clearance	Service Data
	Slap or rap	A	--	--	B	B	A	Piston slap noise	Piston-to-cylinder bore clearance Piston ring side clearance Piston ring end gap Connecting rod bend and torsion	Service Data Service Data
	Knock	C	A	--	B	A	B	Connecting rod bearing noise	Connecting rod bushing oil clearance Connecting rod bearing oil clearance	Service Data Service Data
	Knock	C	A	--	B	A	B	Main bearing noise	Main bearing oil clearance Crankshaft runout	Service Data How to Check
Front of engine Front cover	Tapping or ticking	A	A	A	B	A	B	Timing chain and chain tensioner noise	Timing chain cracks and wear Timing chain tensioner operation	Inspection Exploded View .
Front of engine	Squeaking or fizzing	A	B	--	B	--	B	Drive belts (sticking or slipping)	Drive belt deflection	Inspection
	Squall Creak	--	A	--	A	C	C	Water pump noise	Water pump operation	Replace water pump
	Rattle	--	--	A	--	--	--	VTC	VTC sprockets	Exploded View .

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