Question about 2004 Mazda 6

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My mazda 6 2004 motor 2.3, when is a low speed, sounds as detonation. We did change the knock sensor , but it persists. What can i do?

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  • jutdaz Oct 21, 2008

    did it get louder or knock faster as you excelorated?

  • fernandezchr Nov 18, 2008

    Yeah. I have the same problem, I can noticed it when the engine is warm, on drive and much louder when A/c is on. According to scheduled manual, at 75k miles if its noisy, get valve clearance adjustment?


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Change the gasoline to 95% octane, check the fuel reel and injectors..

Posted on Aug 06, 2008

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