Check your spark plugs 1st, make sure that they are clean and then check to see if you have spark, but since your coils operate 1/4 & 2/3 plugs that is probably not your problem, more likely its valve adjustment or carbs. check your vavle lash when its dead cold and with the vavle cover off, unless your real talented and can check yours through the tappet covers ( I never can ) and then start looking at the carbs on the cold side. while your at it check for exhaust and intake manifold leaks too.