1985 125 HP Force, model # 1258X5A. Compression 140-145 on all 4 cylinders. It has new Champion UL18V spark plugs. Starts and idles on top 2 cylinders, 3&4 have no effect when grounded out. It has spark and gas to all 4 cylinders. I have switched coils and C-D boxes in every configuration I...
