Question about 2002 Harley Davidson FLHRCI Road King Classic

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O ring sucking into motor from intake

On a 2002 Harley Davidson Road King Classic.
Why would it **** in the o ring gasket that holds the intake and throttle body together into the motor causing it to run at full throttle?

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  • Dick
    Dick May 11, 2010

    Fuel is NEVER provided to help cool the engine.

    A vacuum leak typically results in a higher idle speed, that is why your rpms have increased.

    Why is your intake vacuum so high it is sucking the gasket out is the question. Is your air filter plugged?

  • Tom Diffin May 11, 2010

    the air leak is making the engine run lean (hotter) and the comp is giving supplemental fuel to cool the engine thus making the combonation of air leak and more fuel means higher engine rpms you said full throttle do you mean higher idle speed


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The 2002 road king has a problem with the throttle valve screws comming loose and that will cause that problem the cure for this is put some locktight on the screws I did and have never had the problem again.

Posted on Jun 17, 2011

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It was put on improperly, not seated correctly. It happens.

Posted on Mar 28, 2010

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Sound like the throttle body either cracked or came loose.

Posted on Jun 11, 2009

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