I have a 91 ski sanger direct drive with mercruiser 5.7. this is my third summer with the boat. the first summer i used it twice ran awesome up to the end of second time when it started cutting out. i changed fuel filters and it would run good for about an hour. i found debree in fuel tank. removed tank, cleaned out and ran brand new fuel line. i removed carb (quadrajet carb), and had an automotive mechanic rebuild it for me with a kit i bought from carquest auto parts. install carb will not idle below 1000 rpm and mixture screws do nothing. called my local boat shop they said street kits and marine kits different. so i bought there kit made by sierra, did it my self. took to lake yesterday still does not idle right. engine sounds like its missing and low rpm but more at high rpm. im only getting 3200-3300 rpm at wot. i put new plugs in it still same. this boat did sit in a nasty winter and was a lot of condinsation on everything. are my points and cond. bad? coil? wires? should i buy an reman marine carb? any help would be great.
