I have 2 questions. 1) I have a 100 Hp Mercury about a 1965 sn# 1758124 the motor starts good when cold and runs very well for about 10 min. or so. Then it starts to lose power, like it starts to lose cylinders. It will run on 5 then on 4 with a little miss here and there, then on 3, on 2, then...
