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post #11 of 22
did u lean your case to the side or something, it could be the reason.
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post #12 of 22
if your pump was making noise , it may be damaged...maybe a seal broke inside of it...what kind of pump is it ?
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post #13 of 22
Thread Starter 
Case has not been on its side. The res is at the highest point.

The sound is just that of air passing through the pump.
Its a ddc 18w with an xspc top.

Thanks for the help guys. I hope I can figure this out.
post #14 of 22
I would concentrate your leak search near the pump intake, since that part of the system could be at a slight vacuum (depends on the pump and the height of your res, but I would say this is probably the case). Your leak may be sucking air in, and water would only come out if you shut it down. However, since air is less viscous than water (and doesn't have that surface tension thing), air will leak through a much smaller hole than water will.

If you have a small vacuum pump (I have a hand-pump that is made for bleeding brakes, you could probably borrow one from a "male enhancement" device), shut off your system and hook up the pump to the highest point of your system, such that you have a completely closed system, then start pulling a vacuum on it. Any leaks will show up by a stream of bubbles coming in (much better than a stream of water coming out).
    
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post #15 of 22
Quote:
Originally Posted by laurie View Post
Case has not been on its side. The res is at the highest point.

The sound is just that of air passing through the pump.
Its a ddc 18w with an xspc top.

Thanks for the help guys. I hope I can figure this out.

If that pump is an in line pump, and it is (or was) making noise, then the baffle inside could have a hole in it..

This can happen.. If the pump uses a rubber baffle inside and it has a hole in it, it can pull air in but not lose any water.. Rare, and the hole usually is very very small..

A good way to check it to put a little back pressure on the system.. Close or crimp the line before it goes into the pump.. Only for a few second to see if the extra pressure shows a leak.. Becareful, if you do this too long you could damage your pump..

If your tech. minded, take your pump apart as much as possible.. Usually you can get to the baffle with little effort.. Inspect the baffle and clean off any build up.. Remember, if there is a hole its really small.. You may have to look real hard and even stretch the baffle a little in order to find it..

Good luck..
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post #16 of 22
If you have a bay res put a thick book under the front of your case so the water will stay over the barbs in the back of the res and see if that will work it out...You might want to take your rad loose and shake it up to see if there is a lot of air trapped in it....
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post #17 of 22
if the water in your res is cavatating bad enough, bouubles could be getting sucked back through the loop. nost reservoirs have a baffle or tube in them to keep this from happening though
    
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post #18 of 22
Thread Starter 
The res has a plastic semi circle around the outlet. It prevents any air getting in as it only has an opening at the bottom of the res. Hard to explain sorry.
post #19 of 22
Thread Starter 
I think I might have found the problem.
The rubber seal on my drain fill port seems to be perished.
I have wrapped some teflon tape round it for now to see if it helps.
Thanks so much everyone.
Great ideas as always.
Will + rep later
post #20 of 22
Quote:
Originally Posted by ira-k View Post
If you have a bay res put a thick book under the front of your case so the water will stay over the barbs in the back of the res and see if that will work it out...You might want to take your rad loose and shake it up to see if there is a lot of air trapped in it....
What Ira said..

Those single bay reservoirs are a little testy about fill depth. Doesn't take much to drop down to the point of sucking air back into the system. Top her off good.

If you're sure it's a leak, an air in leak is likely going to be somewhere between the reservoir and pump inlet as this is the area that will primarily run with negative pressure (suction from the pump).
    
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