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  • Knocking Noises

    Hey everyone,
    Got a question ... I have a '99 Camaro. When I start it up in the morning I hear a slight knocking sound while the engine is still cold. Once it warms up the noise goes away. Any ideas as to what the knocking is and is it a big deal?

  • #2
    I Have no idea but mine is a 99 and it does the exact same thing... I remember a Chevy tech told me that these engines have a lot of piston slap... makes me feel safe running NOS
    99 3800 NBM Camaro - (Xcessive Xcelleration Racing Team)<br />Ram/Cold Air Induction (custom)<br />Modified 4l60e Valve Body<br />Z28 Catback<br />SS Hood <br />Modified 99 GM 3800II <br />JB Performance Engineering<br />jfbperformance@cox.net

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    • #3
      yea I have that same damn problem. Chevy tells me this is normal and it pisses me off.

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      • #4
        wow all three of us have a problem and we all have 1999. Are we all Y87 with A4s as well? THen maybe we can all b*tch at GM

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