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Old 25-09-2009, 11:28 PM   #1
stevehyperguy
 
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Join Date: Sep 2009
Age: 51
Posts: 20
Bike: cr 125 2003
knock on lifan 150cc engine

my mate has a kt 150 and on idle it has a very heavy knock like being hit with a hammer,on raising the revs it sounds fine
have had the head of and the con rod and piston seem fine no play in the bearings any ideas guys,got me puzzled

cheers steve
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