S2000 Under The Hood S2000 Technical and Mechanical discussions.

Knocking noise help

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Old Aug 11, 2022 | 12:28 AM
  #11  
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Sounds like maybe piston slap or rod knock. Try pulling each coil lead, one-by-one, and see if the noise changes.
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Old Aug 11, 2022 | 12:33 AM
  #12  
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Coul lead one by one nothing changes all normal same
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Old Aug 11, 2022 | 05:12 AM
  #13  
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Another option is to buy a stethoscope and pinpoint where the noise is coming from.
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Old Aug 11, 2022 | 05:15 AM
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I have a stethoscope, but the sound is scattered, I can hear it mostly down low, but even if I put it on the valve cover, it can also be heard
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Old Aug 11, 2022 | 11:05 AM
  #15  
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Originally Posted by Jirka
I have a stethoscope, but the sound is scattered, I can hear it mostly down low, but even if I put it on the valve cover, it can also be heard
It sounds more and more like the bearings.
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Old Aug 11, 2022 | 01:51 PM
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Maybe a previous owner lost an oil cap?
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Old Aug 12, 2022 | 03:49 AM
  #17  
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Originally Posted by Slowcrash_101
Maybe a previous owner lost an oil cap?
why ?
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Old Aug 12, 2022 | 04:43 AM
  #18  
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Because an oil cap bouncing around the transmission tunnel can make random tapping noises.
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