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