Bleed the Coolant System, air vents? Options

[VavAlephVav]

so I recently did the water pump and while I had it apart I flushed through everything with the lower hose off and into the heater hose that connects to the front of the motor.
but I may not have gotten everything out as I had not yet removed the thermostat or water pump when I flushed it, yet I think I got most of it.
I've filled it up and checked it over the last couple weeks and it's not losing any coolant. yet when I start off down the road about once I've got it revved above 3k I hear a little
noise of the water circulating through the heater core. I still have awesome heat, this thing blasts me out and I have to crack the sunroof even when its 2 degrees outside.

So I wonder if I've just got some air still in the system since the heater core is probably the highest point in it. I read something somewhere that showed two air bleeder cocks in the system and one was right on the heater core connections in the firewall.
but I cant seem to identify them on the car, and I can't find the book I read that in and the other manuals I have don't show them.

Do any of you know where these are? or is it sufficient to just rev the motor up high with the cap off and hope that gets all the air out eventually?

[VavAlephVav]

So it started to get warmer than the normal mark on the way to work this morning.
pulled over and checked and it was just a little low. but the overflow bottle is full, in fact I can see were its spilling out from the overflow bottles overflow hole and onto my battery tray.
I'm pretty certain that it is not leaking from anywhere else. and I know the water-pump and T'stat are brand new.
I do have a new radiator cap as well, but its a cheapy I got at the local parts place when I first noticed my radiator cap wasn't working a couple months ago.
So it seems that my problem is that the system is Not sucking coolant back into the radiator from the overflow bottle,
and possibly that it is expelling coolant from the radiator at a lower pressure than it should be.

So in order for it to siphon coolant back into the radiator do you guys think it is just a bad radiator cap? (I'll get one from Mr. Toyota this time),
maybe just having the overflow bottle too full effects the proper operation?
Is there anything else I should check, like maybe the overflow tube/cap/hose is not properly sealed anymore?

[nics]

So it started to get warmer than the normal mark on the way to work this morning.
pulled over and checked and it was just a little low. but the overflow bottle is full, in fact I can see were its spilling out from the overflow bottles overflow hole and onto my battery tray.
I'm pretty certain that it is not leaking from anywhere else. and I know the water-pump and T'stat are brand new.
I do have a new radiator cap as well, but its a cheapy I got at the local parts place when I first noticed my radiator cap wasn't working a couple months ago.
So it seems that my problem is that the system is Not sucking coolant back into the radiator from the overflow bottle,
and possibly that it is expelling coolant from the radiator at a lower pressure than it should be.

So in order for it to siphon coolant back into the radiator do you guys think it is just a bad radiator cap? (I'll get one from Mr. Toyota this time),
maybe just having the overflow bottle too full effects the proper operation?
Is there anything else I should check, like maybe the overflow tube/cap/hose is not properly sealed anymore?

Internal leak, combustion gases goes inside the cooling system creating pressure and pushing the coolant out thru the overflow bottle.