Any Ideas!
I have a 1989 135 hp mercury mariner v6 that idles rough and will not exceed 2700 rpm. Has good compression, (2) new switch boxes, recently cleaned carbs and installed all new gaskets, rebuilt fuel pump, new filters, fuel lines, new rectifier,
completed all spark test running and not running and @ idle,new plugs, removed oil injection and running pre mix 50:1. When running @ 2700 rpm seems smooth. from 750-1400 rpm runs rough. Not sure what to check next? Can anyone help!
Thanks
I have a 1989 135 hp mercury mariner v6 that idles rough and will not exceed 2700 rpm. Has good compression, (2) new switch boxes, recently cleaned carbs and installed all new gaskets, rebuilt fuel pump, new filters, fuel lines, new rectifier,
completed all spark test running and not running and @ idle,new plugs, removed oil injection and running pre mix 50:1. When running @ 2700 rpm seems smooth. from 750-1400 rpm runs rough. Not sure what to check next? Can anyone help!
Thanks