Ok first of all you should NEVER run a vehicle just with water as
coolant. It should always be at least 50/50 mix. There is a petcock on
the bottom of the radiator. Drain all of the water out of the radiator and
overflow bucket. Close the petcock fill up the radiator full and the
overflow about halfway full with anti freeze. Let the car run with the
radiator cap off until you see the fluid go down in the radiator keep
adding anti freeze until it burps. It will take a while to warm up and
open the thermostat so it burps. Then put the cap back on the radiator.
let it run for another 15 minutes or so. Then shut it off and let the car
cool completely down. Open the cap back up fill as needed with a
50/50 blend of anti-freeze and water. Fill the overflow bucket the same
way. You should be good to go.