6G Celicas Forums

hey was up peeps. i need to replace my radiator because its cracked. my dad said i have to bleed it before it over heats. can someone help me

Hi Hope this helps

After you put in the new radiator fill it and then squesse the bottom and top pipes. While you doing this it feedS it into the engine and will remove any air insid. While doing this keep topping up the radiator.

i dont think you can really "Bleed" the radiator or the cooling system...you can flush it and replace it with new but its not like a brake system where you have to geet air out of the line...you just add coolant to the Rad. untill it takes all it can...if the Rad. is cracked and is leaking then i would suggest replacing it so you are not constantly puttin in new fluid

it helps to park on a hill to help burp the system. make sure you have the cap off for at least 10 mins of idle.

fill rad full - fill overflow half. start car and put cabin heater on hot and blower on full, that tends to prevent air locks. as said squeeze rad pipes you should feel the top one getting warm. check temp gauge and if you feel heat coming thro the vents all is well - a bit of revving helps. turn off car and top up rad (careful when you take the cap off - use a rag) and fill the overfull to desired level.

buy a haynes manual or similar - make life a lot easier and a good way to learn, thats where most of us started!!

my friend who was a machanix said that because its a 94, so it wouldnt have a bleeder

idle it with the cap off and the heat on low till its at full temperature, let it keep idling till the thermostat opens, let it keep idling till the fan comes on.

as it idles, add coolant to the radiator as needed.

once the fan has come on and gone off put the cap on, let it idle till the fan comes on and goes back off a couple more times. make sure to fill the resivoir up as well.

turn it off, let it cool down overnight. add to the resivoir as needed. take it for a spin, check the coolant level in the bottle, make sure the heat still works, should be good to go.

Im not really 100% sure what u mean when u say you need to bleed it before it overheats.... but heres what I know...



if you are low on coolant, the nature of our upper rad hose (being slanted downward to the engine) it will be full of air. so when u install the new rad, pour some coolant directly into that hose before connecting it to the rad (it wont spill out as long as your careful trust me), this will keep you from becoming airbound which causes your car to overheat almost immediately.



as far as "bleeding" goes, there is no such thing. You can drain or you can fill. if you get air in the system it works itself out (squeezing the pipes does help here, or you can simply run it with the cap loosened [not off]) the "bleeder" we r talking about here could just be the little wing-valve at the bottom of the rad, just under the lower hose.



ur more than welcome to pm if u have an issue, i actually just did this not even a month ago