system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Do pistons ever stop mid cycle in an engine when it is turned off? How does the engine account for that when turned back on?

I mean specifically, is there ever a point where a piston is only partly open? How do you put appropriate fuel and air in to begin it's cycle?
gpt
That is where the electric starter comes in (as always when you start).

The starter uses an electric current to spin the engine around and thus starting the engines cycle of intake-compression-ignition.