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Thread: Dirt bike guru WANTED yamaha yz125

  1. 25th April 2006, 11:04 #1
    brokeit
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    Dirt bike guru WANTED yamaha yz125

    Hi I have just rebored my cylinder and put in a new piston, now I can't get my bike to fire there is spark but it wont fire. Heard it could be a reed valve? Does anyone have any ideas. Thanks
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  2. 25th April 2006, 11:52 #2
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    Motu
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    The other two things required for combustion are fuel and compression,and being a 2 stroke I'd like to add vacuum in there too - check those and get back.
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  3. 25th April 2006, 21:43 #3
    XTC
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    I see you rebored it and fitted a new piston.... Did you also fit the rings? Did the 96 YZ125 have a steel bore?
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  4. 26th April 2006, 17:59 #4
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    laRIKin
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    Since it was going before and most things being the same.
    Are you sure that you put the piston in the right way around?
    And is the plug getting wet?
    Feel the fear and do it anyway

    Don't confuse education with intelligence.
    There are alot of highly educated idiots out there.
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