I have a 115hp Johnson outboard. Recently the side of the gearcase blew the side out, and we replaced it with a new one. Ever since then when it gets to top speed it starts jerking about every 10 seconds. It's just a really quick and sudden jerk. We have adjusted the piece the puts the gearcase...
I just bought a 99 Javelin with a 115hp Johnson. <br />I changed the plugs and took it out the other day. It ran fine for about 30 min, and then all of a sudden it started backfiring really bad, especially at WOT. Could the carburetor just be dirty? Or maybe water in the fuel? Please give me any...