Just bought a pontoon with a 93 model 90 hp Mariner. Previous owner had it checked out. Carbs were cleaned, new impeller installed, new stator, new rectifier, new injection oil tank. When I got it I drained the old gas and filled up with fresh. First trip to the lake it ran up to 4500 rpm and then started running rough and wouldn't take the throttle. Idled back. Replaced inline fuel filter at motor, put in new plugs, and new primer bulb. Ran better today. Ran it up to 5500 rpm and it ran pretty good. Still idles really rough and eventually dies if left at idle.<br /><br />What should I look at next?<br /><br />Thanks,<br /><br />D Green
