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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Top end Sputter
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[QUOTE="sixstring4137785, post: 112111, member: 17848"] Here's the deal. 00 KDX220, FMF rev, Boyeson reeds, Modified airbox lid, 42 pilot, 145 main. Running 40:1 I've been riding on this setup for about a year with no problems. just a good clean powerband from right off idle to screaming top end. The past two rides were decent except the fact that my bike developed a little sputter around the top end of the powerband. I tore down the airbox, the carb, and the reed cage, replaced the reeds, inspected and cleaned everything. The new reeds refreshed the throttle response but that sputter up on top is still there. I tinkered with the jetting but the results showed it was properly jetted before i messed with it, and it was only adding confusion to the diagnosis. I keep the insides of this bike super clean and use only high quality fluids in an attempt to avoid an early top end service. any suggestions before I move on to the powervalve and top end ? [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
Top end Sputter
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