Watercooling loop issue: Lound Noise from rad

[Proto]

I have an XSPC Rasa 750 RX360 kit and I've just resetup my loop after adding a gpu block for the 6950. Temps seem to be fine however I have another issue. I've done a 7-8 hour leak test but I can hear a loud sound of water dripping inside the radiator and this is accompanied with a sound of water getting pumped into the rad. The driiping sound is constand but the 'whoosh' sound of water getting pumped is very few seconds.

I had originally had my loop set at res/pump>CPU>Rad>Res/pump but I read a lot of people recoomending moving the rad before the cpu so I have now set it as Res/pump>Rad>CPU>GPU>res/pump and I'm pretty sure the first time I setup the loop the radauioator fill sound went away within a couple of hours. I've tried moving the pc/rad from side to side but hasn't made much difference. Any Ideas?


EDIT:

Seems it's definately an air stuck in pump issue, tilting it and keeping it to one side makes the nose go, whats the best way to remove the air? I've tilted it both ways quite a few time.


EDIT 2:

Seems like i got it fixed by tilting it to one side and leaving it like that for a while.

 

[JeffyB]

When you fill a loop air will get trapped in components. To get this out remove anything that's not fixed down in your case and rotate the case so the air can escape that particular component. Chase the air around the loop being careful not to suck any air into the pump from the res (if you can remove the res to keep it upright will help a lot). Once all the big air bubbles are out the rest you may need to top up your res. more air will come out over the next 24/48 hours, again top up your res as needed.