G37 Sedan

help identify sound

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Old Nov 21, 2017 | 03:02 PM
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staskz
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help identify sound

im attaching a video, its not mine, but it describes the noise. im pretty sure most people on here would know what it is.

what is this sound guys? you can hear it after 23 seconds into the video.

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Old Nov 21, 2017 | 05:49 PM
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That there is knock, better known as detonation. Base timing could be too high or they're using 87-octane.
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Old Nov 22, 2017 | 11:35 PM
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Originally Posted by slartibartfast
That there is knock, better known as detonation. Base timing could be too high or they're using 87-octane.
My car does it as well on occasion, with a steady diet of 93. Cannot get it to do it under load. Only occurs with light throttle from a stop. My best guess is one of the heatshields
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Old Nov 23, 2017 | 11:51 AM
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That's the exact sound mine makes too!
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