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    470 miss idle to 1500 rpm - still cant fix it

    The boat ran great and this happened during one outing and I can't figure it out. it has a miss (runs rough) from idle to 1500 rmp, above that it smooths out and seem to have good wot. I can ski with it. i have replaced: plugs, wires, cap, rotor. It has petronix ignition and i put the points...
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    mercrusier 470 miss upto 1500 rmp exhaust leak?

    my 470 has a miss from idle up to 1500 rmp and then runs smoothly. it is not the plugs wires rotor cap or petronix ignition. it is not the fuel pump or filters. the carb idle adjustment screws will not make it go away. Help! is it an exhaust leak? how do i check? any common area where...
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