cooling system bleeding

[ReadieeVTS]

hi guys ive got to bleed my cooling system 2mora, i did read a thread off of some1 else but i just wanted to clarify first b4 i go ahead and do it... when im bleeding it do i need to start off by undoing the RADIATOR bleeding point, then the thermostat housing bleeding point, and then the heater hose? do i do this with the engine running or engine off? Cheers Lee

[MAS]

I can tell u one thing mate do it with the Engine turned off!

[ReadieeVTS]

I can tell u one thing mate do it with the Engine turned off!

i was thinking that to be honest mate, had a bad experience from trying to bleed it with the engine running then?

[vtrmann]

why do you need to bleed it just wonderin was gonNA DO mine was over heatin. fitted new thermostat sorted now. i sometimes hear runnnin water when startin up is that air lock?

[ReadieeVTS]

why do you need to bleed it just wonderin was gonNA DO mine was over heatin. fitted new thermostat sorted now. i sometimes hear runnnin water when startin up is that air lock?

Ive just put a new engine in mate, so im guessing im going to need to bleed it so i just wanted to know and im not quite sure myself tbh mate, most possibly...

[Tontsy]

work from the lowest bleeding point to the highest, as bubbles will only rise!
and do it with the engine running, and hot heaters on.

[vtrmann]

do you hear a clickin noise when you turn engine off like a tick down? well i hear that while driving. starting to get me worried had vtr few month dint do it when bought.any suggestions. a loud click every now and then

[ReadieeVTS]

work from the lowest bleeding point to the highest, as bubbles will only rise!
and do it with the engine running, and hot heaters on.

okay even if the engine is cold? put the hot heater on full? do i open the bleeding points 1 by 1 or all at the same time? Cheers Lee

[Tontsy]

start it up put your heaters on, open your bonnet, and crack on. open them one at a time, starting at the lowest point.

[wardy123]

i need to do this, where's the lowest point and where are they all ( bleeding points )

[raunchz]

Bleed points:
- top of radiator, passenger side. Twist-out cap
- thermostat housing. 5mm brass Allen
- drivers side at the back of engine bay next to inlet. 'bike tyre' nipple, screw cap

lowest point is at radiator and working down my list (need a header tank though)

[wardy123]

your a diamond mate cheers, i'll do that this morning

[raunchz]

your a diamond mate cheers, i'll do that this morning

Bit too cold for that!!!

[wardy123]

haha yeah i'll be okay though

[JonCarter]

Don't know if youve solved it already but, you do it with the engine running, but do not attempt to take the cap fully off, just turn it till you hear the air escaping, like you can do with a bottle of fizzy drink :) hope this helps :)

[wardy123]

lol, yeah its done. cheers dude!!

[ReadieeVTS]

Bleed points:
- top of radiator, passenger side. Twist-out cap
- thermostat housing. 5mm brass Allen
- drivers side at the back of engine bay next to inlet. 'bike tyre' nipple, screw cap

lowest point is at radiator and working down my list (need a header tank though)

can i do this from cold? just start the car up then do it? Cheers Lee

[raunchz]

can i do this from cold? just start the car up then do it? Cheers Lee

Not really tbh.

Put header tank on the radiator

Get the engine running and hot enough so that the thermostat is open (top radiator hose will be hot)

Then go through opening the bleed points until water constantly runs out of it. Then close it and move onto the next one.

[bristol-boy-tom]

I gotta do this tomorow and was just wondering is the thermostat housing just to the right of the rocker cover? And how hot does the engine have to be when this is done?

[raunchz]

I gotta do this tomorow and was just wondering is the thermostat housing just to the right of the rocker cover? And how hot does the engine have to be when this is done?

hot enough for the thermostat to be open ideally.

Yes, it's at the engine end of the top radiator hose

[bristol-boy-tom]

Done it now.. my dad knew what he was doing.. the guide helped very much cheers

[bent1]

why do you need to bleed it just wonderin was gonNA DO mine was over heatin. fitted new thermostat sorted now. i sometimes hear runnnin water when startin up is that air lock?

i have heard water running when i have done mine in the past, id fill the coolant bottle up and run it and hear it, you cant overfill the bottle obv so alls you got to do is be patient, i did mine over a few days, the engine gets warm, let it cool down and you will find the water in the bottle has dropped, just fill it up again and repeat the process, when i did mine i ran the engine with the top cap open (the one that looks like a cycle dust cap) on the top left, when the water comes out cap it. then id turn off the engine and open the bottom bleed valve on the rad until water is coming out then tighten. best bet then it to just run it and see how it goes, check the water over the following few days and if it needs topping up top it up and it shud sort itself out.