Doea anyone know how to bleed the radiator????

 

there is a 12mm bolt with a hole on the top of the T-stat housing. With your ignition off loosen this bolt off a bit and pour coolant into your rad until no more boubles are coming out of the bleed bolt then close it up, Top off the rest of the rad fluid (if needs be) then start your car keep adding rad fluid if required until it's sitting at the top a few more bubbles may be worked out of the system (continuous bubbles would be a bad thing) - close the cap, and you should be good to go.

from the post https://honda-tech.com/zerothread?id=1092022

 

i remember reading somwhere that all you got to do is when you first turn on the car just blast your heat at the highest for a while.

 

you are supposed to blast the heat (it allows the coolant to flow thru that loop), but you still have to bleed the system with the bleed bolt.

 

you dont have to use the bleeder bolt.

Make sure the car is COLD and off otherwise pressure from taking the cap of the rad could blow hot coolant all over you. Pull the rad cap off, start the car, heat on full blast. let it idle for a few mins, add coolant/water whatever you are using. keep doing this until all bubbles stop and you have a nice constant fluid level.

 

I would recommend using the bleed screw, Honda knows what they are doing.