i have a 1986 sea ray sundancer with twin 4 cyclinder engines 3.7 liter 170, i have changed the fuel filters, new plugs,wire,cap and rotor,points,condensor rebuilt the carb and new accelerator pump and i am still haveing a problem with my port side engine bogging down when i go to throttle at times and once in a while it will shut down when i am doing 6mph and a few times at idle.. can any one help me out on this? i just bought the boat 2 weeks ago. thanks