I managed to convert a tried and true Briggs and Stratton engine into a basic working Diesel engine! I drilled and tapped a radio control glow plug into the head and created a choke for the carburetor. This engine will shove you about 1012 min of runtime with a AA battery. And when you want to run on gasoline all as you’ve got to do is put the plug wire back on! This is just some redneck science which I turned into an awesome universal fuel engine which you’ve got to see to believe!