I found the valve. So here's the problem:
I already put the coolant back in and had started the car. This morning I just ran the car for about 5 seconds, shut it off and opened the valve. A small amount of air escaped each time. Since I had put a gallon size bubble in the system, this would take me approximately 2 months to bleed the air out of the system. I'd like to run a few ideas past you.
For one, if I just have the valve released while the engine is running, it spits coolant out and no air.
I live in central Ohio. There's no such thing as flat ground, so I parked my car facing uphill. The valve is located on a 3in pipe that shoots up from the neck of the water pump.
I'll make sure that pipe and valve are at least higher than the radiator, no matter which way it's facing on the hill.
I'm thinking I might need to drain the radiator again? Because just sitting there, no air escapes obviously, because it's trapped somewhere else in the system. Will draining the radiator and then refilling it with the valve open help out, or just create another bubble.
Sorry for all the questions, but this is the first time I've put coolant back in a car with no radiator cap, and I'm not doing so hot.