No. 21 Engine Noise: Notes

POSSIBLE CAUSE DESCRIPTION

21	ENGINE NOISE
DESCRIPTION	Engine noise from under hood
POSSIBLE CAUSE	Squeal, click or chirp noise: Improper engine oil level Improper drive belt tension Rattle sound noise: Loose parts Hiss sound noise: Vacuum leakage Loose spark plug Air leakage from intake-air system Improper variable air duct (VAD) control system operation Rumble or grind noise: Improper drive belt tension Rap or roar noise: Exhaust system looseness Other noise: Camshaft friction gear noise or MLA noise Timing chain noise

ENGINE NOISE

DESCRIPTION

Engine noise from under hood

POSSIBLE CAUSE

Squeal, click or chirp noise:

Rattle sound noise:

Hiss sound noise:

Rumble or grind noise:

Rap or roar noise:

Other noise: