Nissan Armada 2025-2026 Service and Repair Manual: NVH Troubleshooting Chart

Nissan Armada 2025-2026 Service and Repair Manual / Engine / Engine Mechanical — Symptom Diagnosis / Noise, Vibration and Harshness (nvh) Troubleshooting / NVH Troubleshooting Chart

NVH Troubleshooting chart

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

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 page
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 page
Top of engine Rocker cover Cylinder head	Ticking or clicking	C	A	—	A	B	—	Tappet noise	Valve clearance	Refer to Adjustment.
Top of engine Rocker cover Cylinder head	Rattle	C	A	—	A	B	C	Camshaft bearing noise	Camshaft runout Camshaft journal oil clearance	Refer to Inspection.
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	Refer to Inspection.
	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	Refer to Inspection.
	Knock	A	B	C	B	B	B	Connecting rod bearing noise	Connecting rod bushing oil clearance Connecting rod bearing oil clearance	Refer to Inspection.
	Knock	A	B	—	A	B	C	Main bearing noise	Main bearing oil clearance Crankshaft runout	Refer to Inspection.
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	Refer to Inspection. Refer to Removal and Installation.
Front of engine	Squeaking or fizzing	A	B	—	B	—	C	Drive belt (Sticking or slipping)	Drive belt deflection	Refer to Inspection.
	Creaking	A	B	A	B	A	B	Drive belt (Slipping)	Idler pulley bearing operation	Refer to Inspection.
	Squall Creak	A	B	—	B	A	B	Water pump noise	Water pump operation	Refer to WATER PUMP : Inspection.

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

Noise, Vibration and Harshness (nvh) Troubleshooting

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Engine Mechanical — Removal and Installation

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Other materials:

Removal and Installation
WARNING: REMOVAL CAUTION: When washer tank assembly is removed, washer fluid may come out so prepare a container to receive washer fluid and never allow washer fluid to be sprinkled. Fully open hood assembly. Remove washer tank inlet fixing clip , and then remove washer tank inlet and washer tank ca ...

Differential Lock Indicator Lamp Flashes While Driving
The differential lock indicator lamp will flash once every 2 seconds when the differential lock system is in standby condition. Standby condition is the time between when the differential lock mode switch is turned ON and when the differential lock control unit sees all conditions are met to engage ...

System maintenance
Example Basic information The two radar sensors A for the I-BSI system are located near the rear bumper. Always keep the area near the radar sensors clean. The radar sensors may be blocked by temporary ambient conditions such as snow, splashing water, mist or fog. The blocked condition ma ...

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