where's the bleeder valve?

[chiroengine]

I've replaced: radiator cap, thermostat and water pump on my 2002 Pathfinder. But I didn't bleed the system and it's still over heating. Can anyone help me find the bleed valve? Does it sound like this will fix the problem? Possible helpful clue: the top radiator hose is hot, the bottom one is cold - no circulation through the block. Any help much appreciated!

[timmack]

you sure its not the radiator? doesnt the coolant flow from the radiator to the engine via the bottom hose and from the engine to the radiator via the upper hose?

[chiroengine]

I'm not sure which way the coolant flows, but bleeding the system is the only thing I haven't done yet.I tested the radiator and water flows through it with no leaks. I've been told if you don't bleed the system nothing will work properlyhence, my original question: WHERE'S THE BLEEDER VALVE??? HELP!!!