Motor bensin empat langkah memerlukan empat kali langkah torak atau dua kali putaran poros engkol untuk menyelesaikan satu siklus kerja. Keempat langkah tersebut adalah langkah hisap, langkah kompresi, langkah kerja dan langkah.
Motor gasoline four-step requires four times the steps twice round the shaft or crank shaft to complete one work cycle. The fourth step is suction, compression step, step work and step.
Motor gasoline four-stroke piston step requires four times or twice the crankshaft rotations to complete one work cycle. The fourth step is a step of suction, compression stroke, the working steps and measures.