I just finished replacing my radiator, and now I'm having trouble purging air from my coolant system. I started the truck and turned the heater on max., but I just can't seem to get the air out( Heater does not blow warm). Any ideas or tips would help.

 

Is the water control valve for the heater open or closed? It is in the heater hose supply line and it is controlled by the heater controls. Is the heater fan blowing at all?