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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 813 (Engine Mechanical) >> Noise, Vibration And Harshness (NVH) Troubleshooting >> Use the Chart Below to Help You Find the Cause of the Symptom

Use the Chart Below to Help You Find the Cause of the Symptom

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
  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.

SYMPTOM REFERENCE CHART

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   
Rattle C A - A B C Camshaft bearing noise CAMSHAFT RUNOUT 
CAMSHAFT JOURNAL OIL CLEARANCE 
 
 
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 
 
 
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 
 
 
 
 
Knock A B C B B B Connecting rod bearing noise CONNECTING ROD BUSHING OIL CLEARANCE 
CONNECTING ROD BEARING OIL CLEARANCE 
 
 
Knock A B - A B C Main bearing noise MAIN BEARING OIL CLEARANCE 
CRANKSHAFT RUNOUT 
 
 
Front of engine Timing chain case Tapping or ticking A A - B B B Timing chain and chain tensioner noise TIMING CHAIN CRACKS AND WEAR 
TIMING CHAIN TENSIONER OPERATION 
 
 
Front of engine Squeaking or fizzing A B - B - C Drive belts (Sticking or slipping) DRIVE BELTS DEFLECTION   
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 WATER PUMP
A: Closely related B: Related C: Sometimes related -: Not related