250r Fouling Plugs at Idle
My buddys 86 250r keeps fouling plugs at idle. As long as you're riding or moving, even at a slow pace it runs fine and will not foul the plug. If you let it idle more than a few minutes, it's toast. It's an unported 86 jug, standard bore with a wiseco piston, short rod crank, cool head w/ 21cc dome, atc head gasket, boyesen pro series reeds, fmf fatty pipe & silencer, keihin 35mm a/s carb-155 main, 48 pilot, needle in the middle, pilot screw 2 turns out. Stock air box w/a uni filter, lid off, amr coil, b8es plug gapped at .018". We just replaced the stator with a oe unit. He tried a b7es plug saturday and said it ran better than ever and didn't foul the plug. Should he keep running the b7es or drop the pilot jet to 45 or even a 42? I don't know what else to do to keep it from fouling plugs.
01 Banshee....020" over, Pro Circuit pipes, DMC 916 silencer, CFM aluminum airbox,
Uni filters, TDR reeds, lightened flywheel, milled head, +4 timing, Renthal bars,
250r front shocks, Duro Hook ups on the front, Dunlop KT396's out back,
400ex thumb throttle, TORS removed, yfz450 front brakes.