spark plug keeps breaking

Discussion in 'The Workshop' started by Chubbler, Jan 3, 2012.

  1. Chubbler

    Chubbler New Member

    Messages:
    15
    my runner keeps nakering the plug up it got a geanelli exhaust and mallosi air filter in the air box the plug goes black and then nakers up it has standard jets inside and smokes quite alot
     
  2. FLENG2008

    FLENG2008 Member

    Messages:
    186
    Rides:
    04 vx 125
    Dry and wet fouling
    Fouling, either dry (top - matt black, sooty) or wet (bottom - gloss black, sticky), Can be caused by many different conditions. Carbon deposits build up when the plug fails to fire correctly and burn them off. Air/fuel mixture too rich, choke stuck on, electrical problem, extended periods of low speed driving, plug heat range too cold. All should be investigated
     
  3. Chubbler

    Chubbler New Member

    Messages:
    15
    ok thanks it wet fouls an really smokes when you rev it high do you think its the jet and do you think i should go up or down jet
     
  4. Jonnymarrw00t

    Jonnymarrw00t Moderator Staff Member

    Messages:
    3,240
    Rides:
    Piaggio Zip 05 plate
    Up from standard. to about 65.
     

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