Question about 2000 KTM SX 125

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Why is my engine makin a knockin sound - 2000 KTM SX 125

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  • yadayada
    yadayada May 12, 2010

    where is the noise comming from, bottom of the engine?



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This problem sounds like your lower crankshaft bearing is worn.
the only way to be sure is to pull the top end to expose the rod and center it and see if it has noticeable movement up and down play.
If the crank needs rebuilding make sure you also replace the main bearings
and new seal kit,piston and rings Etc.

Posted on May 12, 2010


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