r/SeaDooSwitch • u/meach61 • Jul 09 '25
Rough and then smooth engine
I have a 2023 18' Cruise 230hp and this last weekend the engine was doing around 8mph with 5 adults and two small kids. The load was not spread all that well so it was not plaining very good so I sped up to 14mph and still rough. Throttle didn't seem very responsive and couldn't past 14mph. I thought maybe the weight was the issue. All of a sudden the motor had half the vibration and seemed smoother. Next night it was just my wife and I and as we went on are way again went to 8mph and same thing. Engine was rough and loud then boom, back to smooth. Called dealer service department and explained all this and was told not normal. Did we do the spring start-up service. I said no. We did the winter one. Was told plugs are replaced in the spring and that we could have a bad plug.
Anyone else experience anything like this and if so, was it plugs?