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yzf 426

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i have a 2001 yzf 426 on a 450yfz chassis it has a fcr carb and i cannot get it to idle. anything below 1800 rpms and it dies no vaccum leaks carb is clean changing jets does not seem to help runs good 1/4 to wide open wt some popping on decel thanks for any help

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Is this a new problem or is something that over time got worse? Did it occur after you took the slide out? Had the bike been sitting unsued for a long period? Did you check the TPS? How about the valves?

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just bought it was runing that away i dont know much about the fcr is the top knob the choke are the hot start

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