coolant bleeders?????

[jamesmetairie]

2004 corolla. does it have coolant bleeder screws ? want to be sure no air in the system after coolant change.

[dorman68]

I have a 05 Corolla and could not find any coolant bleeders. I just loosen the upper rad hose or one of the heater hoses to remove air from the system, it may be a little cumbersome but it's the only way I could think of.

[96integ_chick]

What do you mean loosen the upper radiator hose? Wouldnt just leaving the cap off the rad bleed the system without bleeder screws?

[dorman68]

Originally Posted by 96integ_chick

What do you mean loosen the upper radiator hose? Wouldnt just leaving the cap off the rad bleed the system without bleeder screws?

Leaving the cap of for the initial fill with the engine off would help. After draining or flushing the cooling system air pockets can be trapped in various spots through out the block, heater core and radiator. The best solution that I could think of was after filling up the cooling system put the cap on and let the engine run and get to operating temperature, once the vehicle is up to temp the coolant should begin to circulate after the thermostat opens. Once the coolant is circulating most likely the air pockets will move areound in the system, I replaced the original spring loaded rad hose clamps with a worm drive type so I could gradually loosen the upper hose clamp to release any trapped air.

[Raddman]

Once the coolant is circulating most likely the air pockets will move areound in the system,

That's not necessarily true, sometimes the air bubbles are trapped before the thermostat and it doesn't open because no hot water is passing through, that's why most bleeder screws are on top near the goose neck/thermostat area!

[juicedz]

I'm bringing this post back from the dead because the above methods mentioned do not really answer the question on how to "properly" bleed the system of air without bleeder screws being available.

[juicedz]

ttt

[mikered30]

Drain system, fill up rad, leave the cap off, start car, turn on the heat on high, refill when level drops, repeat until level is correct, and watch the level for a few days. The rad cap is the highest point on the system.