The image shows a close-up of the engine compartment of a vintage motorcycle. The engine is green and gold in color and has a round gauge in the center. The gauge is surrounded by a brass-colored valve with a handle on top. There are two knobs on either side of the valve, one on top of the other, which are used to control the flow of air. The valve is attached to the engine with a spring, which is visible in the background. The motorcycle appears to be parked on a concrete surface, and there is a tire visible on the left side.