A lot of motorbikes are fuel injection which have the same problems as cars and the cheap china engines that you can stick on push bikes are 2 strokes which means you need oil mixed with the fuel unless there's small diesel engines like that or 4 strokes.
A lot of motorbikes are fuel injection which have the same problems as cars and the cheap china engines that you can stick on push bikes are 2 strokes which means you need oil mixed with the fuel unless there's small diesel engines like that or 4 strokes.