Algodoo

The fuel is glitchy so is the piston, in testing it kept glitching out of the cylinder.
I did not design a good fuel delivery system either so its just a dispenser like thing hooked up to the cylinder and it jams frequently.

I attempted to attach output gears but apparently physics has the same problem with it as it does with perpetual motion machines,
it semi works just by iself but as soon as I attached a gear to it the piston could not get high enough for the fuel to reach the laser.