Engine noises when accelerating

2012 ACURA TL
90 MILES • 3.3L • 6 CYL • 4WD
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TL SHAWD
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Rolling marble sound on acceleration low in the engine.
This car requires only 92 to 94 octane.
I run only 94 octane and regular oil changes are done.
Maintenance is done regularly on this vehicle. Anyone have an idea what the rattling noises are? It definitely a sound like low octane.
Jun 6, 2018 at 7:02 AM
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STEVE W.
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Could you possibly record a clip of the sound and upload it to this site? Is this a manual or automatic transmission?
Jun 6, 2018 at 2:18 PM