2002 Speedfight 2

Discussion in 'The Workshop' started by andyjonc, Aug 5, 2022 at 2:23 PM.

  1. andyjonc

    andyjonc New Member

    Sym Jet 4 125cc
    The issue:

    My scooter bogs out and has a horrible flat spot between slghtly open throttle and fully open.

    Things I've done:

    I have tried both the original (clean) air filter and an aftermarket cone filter, happens with both.
    I have recently renewed the exhaust baffle (to get through MOT).
    Fresh fuel and oil checked.


    Does anyone have an ideas what could be causing the issue?

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