motorcycle

Why does a motorcycle backfire when you let off the gas?

asked by adgordon3 (24)


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Tags: motorcycle why

answers

When you twist the throttle, gas is put into combustion chamber but if it doesn't get all the way there (because you let off the throttle, reducing push into the chamber), it'll just catch a spark. The spark has to go somwhere, so it exits the exhaust, causing the bike to backfire.

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posted by kate74 (236)

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