Mazda RX8 - Engine Noise

NO.21 ENGINE NOISE
21 ENGINE NOISE
DESCRIPTION Engine noise from under the hood
POSSIBLE
CAUSE
Squeal, click or chirp noise:
• Improper engine oil level
• Improper drive belt tension
Rattle sound noise:
• Loose parts
Hissing noise:
• Vacuum leakage
• Loose spark plug
• Air leakage from intake-air system
• Improper variable fresh air duct (VFAD) control system operation (13B-MSP
(High Power))
Rumble or grind noise:
• Improper drive belt tension
Rap or roar noise:
• Exhaust system looseness
Other noise:
• Oil pump drive gear noise
• Oil pump drive chain noise
Diagnostic procedure
STEP INSPECTION RESULTS ACTION
Yes Inspect the engine oil level or drive belts.
1
Is squeal, click or chirp
sound present?
No Go to the next step.
Yes Inspect the drive belts.
2
Is rumble or grinding
noise present?
No Go to the next step.
3 Is rattle noise present? Yes Inspect the location of rattle for loose parts.
(w) RX8-Engine Troubleshooting
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