I'm trying to find bolt on a 1990 volvo 240 to bleed the air out of radiator or engine temp is running hot

Question

looking for the bolt that will bleed the radiator so that the air will come out of the engine. temp. rise when i stop in traffic i've changed the radiator, thermostat, coolant temp. sensor. my uncle said there should be a bolt or screw that will release the air

Answer 1

Look on the water pump

Answer 2

Letting air out won't do any good if you don't put coolant into it to take the place of the air you just let out.