Blue Traxx Forum banner

airtofuel

  1. Banshee runs only with air box lid off

    Yamaha YFZ350 Banshee (1987-Present)
    I have a 87 banshee,fmf fattys,k&n,reeds. engine was just rebuilt top to bottom i put a new ignition coil on. its starts and idles fine but as soon as i hit top end its very boggy.if i take the air box lid off it screams like a banshee should?????anybody have any ideas
Top