The greatest difference between a 2 stroke and four stroke motor has to do with firing timing, which could often be noticed in conditions of sound: the two powerplant often has a high-pitched, really loud rumble, whereas the actual four engine tends to possess a quieter purr. In most cases this can be a facet of basic operation as well as efficiency. Two stroke motors fire once per trend, which gives them twice the potency of a four stroke which generally fires only almost every other revolution. Four strokes tend to be more efficient, but they’re weightier and more expensive, too. They are more commonly found in cars and also industrial machinery, whereas things such as lawnmowers, jet skis, and many lightweight motorboats rely on small two stroke model. The fundamental fuel burning and ignition properties of these engines are usually the same, but the differences include respect to how they transform energy and how efficiently that will conversion happens.