I have a 1992 Yamaha 130 2-cyc. I have used it extensively this summer but on the last two trips now it will bog down 3/4 of the time when advancing the throttle from high idle throughout range. It seems to run good and then when you go to advance again it bogs down to like 3/4 RPM. As you move the throttle back and forth a bit, it will surge and then bog down, then surge etc... I have change Raycor fuel/water filter, checked filter on engine (clean no debirs or water), changed plugs no results.<br />Its been a great motor with only a new CDI unit last year.<br />Does it sound like a bad coil, anyway to test them?<br />or carb problem.
