It's one of those things that, once you experience it, you know exactly what it is.Lunytune wrote:You gotta explain that term for an ole coot who's spent most of his life working on 4 strokers, from lawnmowers to big rigs.noiseguy wrote:OK, that "running rough" is called 4-stroking. That's indicative of running rich.
If you take a stock Spree, start it and immediately take off without waiting to warm up and bystarter to kick closed, you'll find that as you reach max velocity the scooter will start shaking and misfiring. It's actually firing every other stroke, or "4-stroking." It will stop once the bike is warmed up.
Bikes running too rich jetting will do this all the time, even warmed up, at accelleration or at a static throttle opening.
