zelda asked in SportsMotorcycle Racing · 3 months ago

I have backfireing bike wr 250 f ?

I have a wr 250f  every time I slow down it pops and then when I rev it  a purple flame shoots out

3 Answers

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  • ?
    Lv 7
    2 months ago

    Yup, that's what it meant to do.

    It might be running a little rich, turn it down a tiny amount.

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  • 2 months ago

    Check your valve clearances. 

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  • DIEGO.
    Lv 7
    3 months ago

    good question !

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