Use the Chart Below to Help You Find the Cause of the Symptom
WARNING: This page is about a different car, the 2013 Infiniti FX50. However, it is still accessible from the selected car via links, so may be relevant.
- Locate the area where noise occurs.
- Confirm the type of noise.
- Specify the operating condition of the 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 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 CAMSHAFT VALVE CLEARANCE Rattle C A - A B C Camshaft bearing noise Camshaft runout
Camshaft journal oil clearanceCAMSHAFT (EXH) VALVE CLEARANCE ADJUSTMENT 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 clearanceCONNECTING ROD SIDE CLEARANCE 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 torsionCONNECTING ROD SIDE CLEARANCE Knock A B C B B B Connecting rod bearing noise Connecting rod bushing oil clearance
Connecting rod bearing oil clearanceCONNECTING ROD SIDE CLEARANCE Knock A B - A B C Main bearing noise Main bearing oil clearance
Crankshaft runoutCONNECTING ROD SIDE CLEARANCE 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 wears
Timing chain tensioner operationTIMING CHAIN Front of engine Squeaking or fizzing A B - B - C Drive belts (Sticking or slipping) Drive belts deflection TENSION ADJUSTMENT Creaking A B A B A B Drive belts (Slipping) Idler pulley bearing operation Squall Creak A B - B A B Water pump noise Water pump operation INSTALLATION A: Closely related B: Related C: Sometimes related -: Not related