I have 1989 3.7 L mercruiser ,after 20 -30 min.running at 3500 rpm started to miss then ,what feels like running on 3 cyl, then 2,then on 1 ,the quits.Took it to mercruiser tech,and after sea trials,he said coil was getting hot ,too many votls going to it.He put new resistor wire ,to carry the 9...
