Coolant flush disaster Options

[The_Chazzman]

Hey, all. I'm trying to flush out my coolant system on my ST204 so I can get all the green junk the previous owner filled it with and replace it with that beautiful red juice. I drained as much of the green stuff as I could, pulled out the thermostat, re-installed the water outlet and proceeded to fill the rad with water. I could hear it making its way through everything until it pretty much all wound up pouring out of the outlet. I would assume this is because there is no stat/gasket in there but, as I can't flush it with them present, what am I supposed to do? Anyone else have this issue? Thanks in advance.

[SupraKid]

Reconnect the hose....? The proper way to do is to empty the system of green, remove the t-stat, and fill it with distilled water. Start the car and let it run for about 30 seconds to a minute to circulate, drain the distilled water, and repeat 2-3 more times to be sure you got all the green **** out. Then fill with a 50/50 Toyota red/distilled water mix.

[Box]

Reconnect the hose....? The proper way to do is to empty the system of green, remove the t-stat, and fill it with distilled water. Start the car and let it run for about 30 seconds to a minute to circulate, drain the distilled water, and repeat 2-3 more times to be sure you got all the green **** out. Then fill with a 50/50 Toyota red/distilled water mix.

That. In addition I can't remember how the Celica's heater core operates, but run the heat to make sure it gets flushed out as well.