just replaced cdi box hooked it all up and just had one spark plug hooked up (no1 cyl) to test for spark and seemed ok.put all plugs in,tried to fire her, no go.Pulled plugs out again ,tested, and spark now only on no3 cyl.fuel and everything else ok.Possibly a problem under flywheel,points ,stator or stator magnets.I have a multimeter if this helps to find the problem but i dont really now what or where to test .Any ideas would be apreciated