Submerged Power Generator 4 Stroke Engine Using Gravity and Buoyancy

4-Stroke engines are the most common used in automobiles. The fuel is mostly gasoline and the exhaust is Carbon Monoxide. The fuel for an SPG is mass supplied by water. The power stroke is accomplished by the weight of the water on the lever pushing down a hydraulic piston to spin a generator. The exhaust is done with an airlock like a submarine firing a torpedo and then the buoyant container of water floats back up to begin another cycle.