Thread: Need help with knock that started shortly after header install.

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  1. #1 Need help with knock that started shortly after header install. 
    GXP Level Member Tuner-Extraordinaire's Avatar
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    As the title says. I started having a strange knock which after going in with a stethoscope, leads back to the flywheel area. The knock is very consistent but only happens at idle and stops around 1500 RPM

    If the hood is closed, You can clearly hear the knock significantly more from the Passenger side front wheel well than you can from the Driver's side front wheel well.

    http://www.youtube.c...h?v=h8kBhiEqCmQ

    http://www.youtube.c...h?v=paahM-y-IHY

    I did a cyl balance test today also.

    YouTube - Knocking (3) -- Cylinder balance test.
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  2. #2 Re: Need help with knock that started shortly after header install. 
    GTP Level Member 01gpgt01's Avatar
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    Sounds like a busted flex plate. Also only one of your links work
    2001 GT. A few here and there mods http://www.streetfire.net/video/2001...ynp_208097.htm

    2009 Hummer H3 Solar flare premium
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  3. #3 Re: Need help with knock that started shortly after header install. 
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  4. #4 Re: Need help with knock that started shortly after header install. 
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