I have about 3000 miles on a rebuilt engine.  I have noticed an increased "clicking" sound on the engine which was not there when I origonally had it installed.   It runs very strong.  Any ideas of the problem?   (I am not a mechanical genius so excuse the questions)   Could the valves be out of adjustment?  That is where the noise seems to be eminating from.    

Thanks for any help   >J.D.

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