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Hi all, Newbie here. I have an 03 KFX400 that just started making a ticking or knocking sound when running. It does it cold/hot, idle/WOT. I adjusted the valves to within the factory ranges according to the service manual and still have the sound. I have no idea where it is coming from and don't really want to pay a dealer to fix it. Anyone have any ideas?
Thanks!
Brad Powell
 

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I've heard that the automatic tensioner on the timing chain can give trouble on those models. When it goes, the engine sounds like a diesel while running.
 

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Does it have a gear-driven starter clutch bolted to the flywheel?? If those bolts work loose and allow the clutch to start moving around...Sounds like piston slap when it happens on a 220 Bayou...
 
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