A year or 2 back our gas water heater broke so we bought a new one, then decided we wanted an electric water heater so bought one of those as well. We plumbed it up so we could run either one or both. We turned off the gas heater and only used the electric. It's been slowly leaking water and some water is inside the middle of the water heater. I'd like to quit using the electric and use the gas instead (cheaper). I fixed the leak but i'm unsure if the gas heater even works or will get a spark. Should I attempt to clean/fix it or just purchase a new one?