What causes the jerking motion of an EFI motorcycle at low speeds?

[VanAlivia]

This is caused by the engine not being fully warmed up. When the engine is cold, the fluidity of the engine oil is relatively poor, and the engine pistons cannot be effectively lubricated, resulting in a noticeable jerking sensation during operation. This phenomenon will disappear once the engine temperature returns to normal. Below is a detailed introduction to vehicle jerking: If the engine still jerks when it is warm, it may be due to the transmission. The transmission fluid needs to be replaced after approximately 50,000 kilometers of use. If the transmission fluid contains excessive impurities, the vehicle's jerking sensation will be more pronounced, and the shifting speed will also be significantly affected.