Can Am 400 part throttle quiting

Extra money

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Nov 11, 2012
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Whitehall
I am working on a 400 can am. It idles fine put at 1/4 throttle spits and coughs put it at wide open throttle runs fine. carb and tank has been cleaned several times. lines flushed out. pull the choke on and it runs fine all the way from idle to wide open you get going take the choke off and it runs fine. any ideas?
 
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