I read on here about a problem called Piston Slap, due to a rebuild of the engine where it has been bored out an additional 0.010" and the piston can 'slap' around in the bore. </P>


It is indicated by a rattling or 'marbles' sound when the engine reduces cycling/idling after giving it gas and you remove throttle.</P>


</P>


Can this be fixed? Is it that large a problem. (Help me Dr. Hundi - I think you responded to this prob last time.)</P>

 

I think you misunderstood.</P>


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The engine needs to be taken out 0.010 with the 0.010 oversize pistons to overcome the piston slap problem.</P>


The piston to bore clearance was set incorrectly from the factory, which is why it develops this problem.</P>


If you log onto Hyundai-Forums.com, you will find a discussion on this topic which may assist you in your own diagnosis of this problem.</P>


Dr. Hundi</P>


http://www.hyundai-forums.com/index.php?showtopic=1029</P>