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ThumperWR450F

bike sputters when cold.

3 posts in this topic

i changed the main to a 160 and the pilot to 48. when the bike is cold it sputters a little till it gets warm than it runs great . any suggestions on how to clear up the cold sputter?

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All of my wrs have done this. It takes a while for them to warm up. Think it is pretty normal.

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Star it, put the sidestand down set the bike on it and walk away for 2-3 minutes. Come back.....problem gone, motor and oil warm go ride. :)

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