Can a V10 run on 9 cylinders?

Yes, a V10 engine can technically run on nine cylinders, though it would operate less efficiently and with reduced power. This situation might occur due to a malfunction, such as a failed spark plug or a stuck valve, leading to one cylinder not firing. While the engine could still function, it would likely experience increased vibrations, decreased performance, and potential long-term damage if the issue isn’t resolved.