Help! cant re-fill coolant!!

[Chriszx]

Hello peeps,
May seem like a stupid question but how do you get the coolant back into the system after a drain? I work at a Toyota dealership & asked one of our techies to do a coolant change so he emptied the old, attempted to refill using his coolant gun connected to an air line which should remove the air from the system but it doesn\'t seem to want to go through. He\'s re filling through the middle filler which I think is correct, but every time he attempts to fill it the coolant just blows back out.
He is a very competant mechanic but this is making him feel like a first day apprentice, is there a special technique coz I\'ve read on the "how to\'s"that you just fill, run the engine & repeat until it\'s full, tried this as well but to no avail :spank

Any help guys would be greatly appreciated
Cheers, Chris :guinness

[n4bes]

Hi Mate,

When I was doing mine, I had to remove the lid on my Ast tank and this allowed to system to fill up properly.

[JDM Part Store]

Also there is a coolant hose that goes to the back of the throttle body.  Pull that when re-filling to allow air out of the system.

[RobbieRX-7]

The best and most effective way to do it is...Pull the hose of the back of the throttle body, remove the cap off the ast by the power steering pump, use a funnel or half a coke bottle and seal it against the filler neck, quickly pour the water in and this pushes the air out the system. When water comes out the ast, replace cap and when water is constantly flowing from the removed hose, it is pretty much bled. Keep an eye because the add coolant buzzer may come back on

[Chriszx]

Brill, thanks for the advice guys will give it a go later
Thanks again, Chris

[Chriszx]

The best and most effective way to do it is...Pull the hose of the back of the throttle body, remove the cap off the ast by the power steering pump, use a funnel or half a coke bottle and seal it against the filler neck, quickly pour the water in and this pushes the air out the system. When water comes out the ast, replace cap and when water is constantly flowing from the removed hose, it is pretty much bled. Keep an eye because the add coolant buzzer may come back on

Right, just given it a go. Only managed to put a bit more coolant (less than 4 litres) in the system before it p1ssed out of the AST. has anyone got a piccy of the hose that goes behind the throttle body? I\'ve disconnected a small coolant hose but that didn\'t seem to make any difference :mad: . Is it worth starting her up to see if it\'ll run it through a bit more? One of our guys here spoke to RE worx who say it can take up to 4 hours but helpfully didn\'t say how to do it!!

Chris

[RobbieRX-7]

Once it starts to flow out the ast, put the cap back on the ast. The reason i said use a funnel is so you get a good volume of water in the funnel causing pressure to force the air out. You need to pull that tb hose off, otherwise the water won\'t go down. It is right by the map sensor. I aint got a pic of an engine bay right now. Once a constant stream comes out that pipe, it\'s bled. It might require topping up later, and it might not. I doubt it takes 4 hours, well it never took me 4 hours and i\'ve done it about 4 times

[JDM Part Store]

Here it is

[Chriszx]

Here it is

Ah, nice one will give it another go!
Thanks again guys for all the invaluable advice :yes

Cheers, Chris

[ro284]

Did your chappie drain the plug on the block? i do that and notice it takes a little while for it to fill, well a bit longer than normal but i wanted to change all the water and replace with the good stuff and a good anti,any luck yet?
Bob

[Chriszx]

Did your chappie drain the plug on the block? i do that and notice it takes a little while for it to fill, well a bit longer than normal but i wanted to change all the water and replace with the good stuff and a good anti,any luck yet?
Bob

Got it sorted late afternoon yesterday, don\'t want to be doing that too often.
Had to put another 1/2 litre of coolant in this morning coz the buzzer was going mad but I think it just takes time for it to get through the whole system. Cheers for everyone\'s advice
Chris