A machinery sound effect, generated with Stable Audio 3.0 SFX from the prompt below. Copy the prompt, change a word and generate your own version.
small combustion engine starting up, initial crank then catching and idling, 2 seconds, outdoor space
Generated with Stable Audio 3.0 SFX. These models respond to material, action and space, so the most useful edit is usually swapping one concrete noun for another.