What causes excessive vibration when accelerating a motorcycle?
1 Answers
1. Rapid gas expansion in the cylinder during gasoline combustion causes vibration; this may be related to fuel quality or using gasoline with an incorrect octane rating. 2. Check if the clutch is functioning properly; the relationship between the clutch pressure plate and friction disc is interdependent. When the friction disc has issues, it accelerates wear on the pressure plate and even the flywheel, mainly manifesting as difficulty shifting gears, incomplete disengagement, and shaky starts. 3. It could be due to excessive clearance in the engine's cam, rocker arm, valves, or damaged bearings/bearing seats.