We used a two stroke atv. My father would go to the store (2km) and come back, no problem. I would go to get water from a spring (7km) and the engine would just

We used a two stroke atv. My father would go to the store (2km) and come back, no problem. I would go to get water from a spring (7km) and the engine would just die after about 4km. It turns out that the gas mixture was too light and the engine was overheating, but only after 4km of continuous run.