arrow keys for throttle z to reset pistons space to calm engine down/startup (40) k to turn off engine e and q to change gears. i to turn on controls t to banish the turbo charger you might need to click the green flag twice only the third piston chamber should be blue.
I like engines so I just made this cause I can v.2 added camshaft, intake exhaust, and combustion animation. proper combustion order (1 3 2 4) v.3 added gears v.4 added temp