How to choose the outboard motor? What is the difference between 4 stroke outboard motor and 2 stroke outboard motor? Due to different ways of work and exhaust, even the same brand, the same size of the 2 stroke outboard engines than 4 stroke outboard engines outside the ship machine noise and jitter are slightly larger, but because the 2-stroke boat engine offshore mechanism is easier, so the 2-stroke outboard machine has a better explosive power, better acceleration and flexibility, also, however, the difference is gradually decreasing as the technology of the 4-stroke offshore aircraft continues to improve.