No. 21 Engine Noise: Notes

DESCRIPTION & POSSIBLE CAUSE

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 VAD control system operation Rumble or grind noise: Improper drive belt tension Rap or roar sound noise: Exhaust system looseness Other noise: Camshaft friction gear noise or HLA noise Timing chain noise

Engine noise

DESCRIPTION

POSSIBLE CAUSE

Squeal, click or chirp noise:

Rattle sound noise:

Hiss sound noise:

Rumble or grind noise:

Rap or roar sound noise:

Other noise: