1981 Honda CM400 Custom problems

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duo_z
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1981 Honda CM400 Custom problems

#1 Unread post by duo_z »

I just bought a 1981 Honda CM400 Custom. Its in pretty nice shape and runs mostly good exept when it gets anywhere above 5000 RPM it sputters. It also backfires when downshifting, and when letting the engine slow you down. Any ideas on what is wrong.

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storysunfolding
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#2 Unread post by storysunfolding »

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