Ok, so I've had quite a few problems with this new loop of mine.
But the latest one is this.
When leak testing for 24hrs+ there is no issue, when turning off after/during leak test there is no issue.
When I plug the pwm for the pump in to the motherboard and boot up normally to windows again its fine no leaks.
But when I turn the system off there is a small leak.
One of the top ports (I have a multi-port top) is the inlet to the res. The fitting it in perfectly, the tubing is over fine and the compression is over that fine.
I made sure that the fitting, tubing and compression were perfect because I've already ripped this loop apart because of this issue a couple of days ago in the same place!
When I booted up my MSI GTX 980 (with waterblock on) was running at 28-31C and cpu 29-34C at idle-just doing some game updates.
Bare in mind this only happens when I turn the system off...does that mean a bubble somewhere or something?
So the leak is at the inlet to the multi-port res? & the fitting was free from leaks whilst testing etc? If so then it may just be a dodgy fitting or port that just waited awhile for it to raise its nasty head. If you have another fittings swap it out or you can test the join by wrapping a 'small' amount of plumbers tape around the thread of the fitting.
Yes that's right, coming out of my rad in to the res.
So you think maybe a change of fitting or port?
I know you said it may have just waiting a while to appear-do you not think it has something to do with the pump being on full speed? When it was running with just power (not plugged in to motherboard) it was fine, as soon as i plug in the pwm into the motherboard i get the issue. Obviously i want to resolve this without taking the loop apart for a second time. So i was thinking what about lowering pump speed?]
I'm with @deejeta on this one. My first reaction is either the threads on the reservoir or the fitting itself. Unfortunately, that would mean taking apart the loop again and messing with those. If you don't want to troubleshoot the existing pieces, I would say to use one of the other two ports on top of the res and a new fitting. I'm not sure how experienced you are with watercooling - so I don't want to insult your intelligence - but remember that the metals in these fittings are usually very soft. You don't need to tighten them very much. Finger tight plus 1/4 turn is the most I've seen recommended.
I don't think lowering your pump speed will help. You said this leak doesn't start until the system is turned off. The only thing causing this leak is the pressure from the weight of the coolant that is already in the loop. Turning your pump down won't change that when the system is off.
If you don't want to take it all apart, you could clean it up and epoxy it. If I remember correctly though these fittings should be tapered, so it can either be too tight or too loose. Some teflon tape (that white stripe thing) helps a lot if you take it all apart.
Why does your fluid look so viscous? Looks like slime, lol.
Hey , it could be several reasons, high rpms = hight liquid pressure (might be caused by thermal expansion of liquid , you have full res, with no space for expanding fluid when it heats up, so the pressure rises, add to that high rpms. I use http://www.aquatuning.co.uk/water-cooling/reservoirs/reservoir-accessories/pressure-valves/14082/aquacomputer-pressure-equalization-membrane-g1/4-high-version )so it leaks,inlet might have stripped grooves ,it`s easy to damage if you overtighten the fitting there or its not tight enough. Last possibility, and the most common, could be a bad fitting/ o -ring on fitting. Easiest to rule out is the faulty o ring, just swap fittings or change o ring (happens sometimes,a month ago I had a primochill one with bad o ring :( ).
Ok, so I'm going to change the inlet port to another top one and change the fitting-I have a couple spare. I also posted this in linustechtips forum-not because I trust one more than another but because there is more chance of someone drawing from past experiences. And it seems like they suggested using this to plug in to the port then the fitting into that-although the poster has not come back to me yet: