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2007 honda crf450r losing power..........

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the bike just dies to a idle whenever you get the throttle over halfway, it is perfect in the bottome half of the throttle but goes flat once over half throttle like its not getting enough gas, any ideas?

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have you done any maintenance lately on the bike?

Post the valve clearance specs

I have a hunce that your crank is going. remove the left side cover and inspect the pickup wires for shavings. the shavings short out the ignition

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Just took it apart about five hours ago and replaced the timing chain, crank and everything else looked good. Set for about two months after maintenance. Its idles and runs perfect as long as your below 3/4 to 1/2 throttle. Just dies to a sputter past that.

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inspect the leads at the pickup for sure. Also check the sticky to make sure you got the timing correct

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I would check/clean the main jet first.

I agree....That's where the main comes into play......

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