Problems with speedfight 50

Discussion in 'The Workshop' started by JamieS, Nov 20, 2010.

  1. JamieS

    JamieS New Member

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    right. my speedfight will run nice when its cold but as soon as it gets hotter it will splutter and misfire, and then it wont go over 40 very easy. what could this be?
     
    JamieS, Nov 20, 2010
    #1
  2. m1ck_t

    m1ck_t Moderator Staff Member

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    stock bike?

    not mods?
     
    m1ck_t, Nov 20, 2010
    #2
  3. JamieS

    JamieS New Member

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    ive got a tecnigas racepipe. i just put new 6.9 rollers in. but i havent jetted it yet
     
    JamieS, Nov 20, 2010
    #3
  4. m1ck_t

    m1ck_t Moderator Staff Member

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    that is most probably the issue then. when the engine is cold it compensates from the choke unit.
     
    m1ck_t, Nov 20, 2010
    #4
  5. JamieS

    JamieS New Member

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    how do i fix it then? up jet it?
     
    JamieS, Nov 20, 2010
    #5
  6. m1ck_t

    m1ck_t Moderator Staff Member

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    I personally have no experience with peugeot's but if i had to say, id say upjet by 10% and go from there, might need to adjust the mixture screw (if its adjustable)
     
    m1ck_t, Nov 20, 2010
    #6
  7. m1ck_t

    m1ck_t Moderator Staff Member

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    Again, i dont know speedfight engines , but rollers sound too heavy to me ??
     
    m1ck_t, Nov 20, 2010
    #7
  8. JamieS

    JamieS New Member

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    yeah but when its cold it goes up to 50 easy enough but when it gets hotter it will splutter and misfire then struggle to go over 40
     
    JamieS, Nov 20, 2010
    #8
  9. m1ck_t

    m1ck_t Moderator Staff Member

    Messages:
    3,627
    Rides:
    alot of shit
     
    m1ck_t, Nov 21, 2010
    #9
  10. capri dave

    capri dave Active Member

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    thinking about this logically, i would say the 1st thing to look at is the choke.

    maybe the choke is stuck on....this is why i run a manual choke, you know where you are with manual chokes :)
     
    capri dave, Nov 21, 2010
    #10
  11. JamieS

    JamieS New Member

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    its stopped spluttering since i cleaned the spark plug but it still struggles to get over 40
     
    JamieS, Nov 21, 2010
    #11
  12. capri dave

    capri dave Active Member

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    5,076
    and what colour was the spark plug before you cleaned it ?

    i would still say 1st check....choke!
     
    capri dave, Nov 21, 2010
    #12

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