1.Locate the area where noise occurs.
2.Confirm the type of noise.
3.Specify the operating condition of the engine.
4.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 page
Before warm-up
After warm-up
When starting
When idling
When racing
While driving
Top of engine
Rocker cover
Cylinder head
Ticking or clicking
C
A
—
A
B
—
Tappet noise
Valve clearance
Inspection (GT-R certified NISSAN dealer)
Rattle
C
A
—
A
B
C
Camshaft bearing noise
Camshaft runout
Camshaft journal oil
clearance
Camshaft (GT-R certified NISSAN dealer)
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
Cylinder Block (GT-R certified NISSAN dealer)
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
Cylinder Block (GT-R certified NISSAN dealer)
Knock
A
B
C
B
B
B
Connecting rod bearing noise
Connecting rod bushing oil clearance
Connecting rod bearing oil clearance
Cylinder Block (GT-R certified NISSAN dealer)
Connecting Rod Bearing (GT-R certified NISSAN dealer)
Knock
A
B
—
A
B
C
Main bearing noise
Main bearing oil clearance
Crankshaft runout
Main Bearing (GT-R certified NISSAN dealer)
Cylinder Block (GT-R certified NISSAN dealer)
Front of engine
Timing chain case
Tapping or ticking
A
A
—
B
B
B
Timing chain and timing chain tensioner noise
Timing chain cracks and wear
Timing chain tensioner operation
Inspection (GT-R certified NISSAN dealer)
Disassembly and Assembly (GT-R certified NISSAN dealer)
Front of engine
Squeaking or fizzing
A
B
—
B
—
C
Drive belt (Sticking or slipping)
Drive belt deflection
Checking
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
Inspection (GT-R certified NISSAN dealer)
A: Closely related B: Related C: Sometimes related —: Not related