Water Fuel Injection System ® Water Fuel Injector System ® processes and converts water into a useful hydrogen fuel on demand at the point of gas ignition. The Water Injector System ® is design variable to be retrofitted by replacing fossil-fuel injectors-ports affixed to conventional jet engines, heating system, rocket engines, even replacing internal combustion engine spark plugs. The Water Fuel Management (WFMS) System is a digital computer logic control system which systematically activates the Water Fuel Injection System ® in the following way ... using water as fuel.