I've heard various comments on the board, but I'm unsure when it's a bad sign that it's 4-stroking. Near as I can tell the engine should only be 4-stroking when it's not under load, but some people seem to only get there bike to 2-stroke under full throttle.
When should these bike engines 2-stroke, and when shouldn't they 4-stroke?
When should these bike engines 2-stroke, and when shouldn't they 4-stroke?