El Gordo
Well-known member
Your post about 'Frank" having a vibration and discovering a loose sparkplug cap put me on the right track with my bike. I had a simular vibration and a not consistant miss. I took all the caps off, cut the wires back about 1/4" and put them back together with dielectric grease. Vola! Much smoother (4500-4700 rpm) and miss is gone. Pretty sure it was #4 acting up.