1. Intake stroke: The intake valve opens, and the piston moves down in the cylinder, creating a vacuum that draws air and fuel into the cylinder.
2. Compression stroke: The intake valve closes, and the piston moves up in the cylinder, compressing the air and fuel mixture.
3. Power stroke: The spark plug ignites the air and fuel mixture, creating an explosion that drives the piston down in the cylinder.
4. Exhaust stroke: The exhaust valve opens, and the piston moves up in the cylinder, pushing the exhaust gases out of the cylinder.
