hi i got this boat last year and i already had the coil changed.it ran fine untill a couple of weeks a go.the motor runs good for the start of the trip for about 20 minutes then it starts loosing power.then i let it stay of for about 20 minutes and it starts running fine again.and same thing over and over. it sounds like when the motor runs bad it is runing only on 2 cylenders.also when running bad the other cylender kicks in sometimes. please help me find out the problem.thank u.the motor is mercury 700 3 cylender twin carb.
