I have a 1997 Johnson 115. A few weeks ago anytime I tried to get on a plane it would surge terribly (it would run fine at idle). I changed the plugs and replaced the water separator. The filter looked real bad ? very rusty and full of junk but the fuel looked clean (no water). So I took it...
First 3 trips this season: motor runs good initially but after shutting the motor off for awhile and restarting it runs like crap (alarms not sounding). Seems like its running on 2 cylinders. Sometimes I can play with the throttle and get it to run good; other times I can shut down the motor...