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1999 rm125 over reving on start?

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What would make my rm125 rev high on start with or without the choke on?When it warms up it drops down to a good idle.I done checked for air leaks and I thought it might be the reeds but I just put some boysene pro reeds in and it still revs high until it warms up.

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Check the choke. If it doesn't change the idle with it on or off, that may be where the leak is.

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If it is leaking air somewere wouldnt it keep idleing high all the time?After it warms up it idles fine.I know it neesds to be jetted because if im not wot it fauls plugs fast.

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