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Discussion Starter #1
Hey guys, I just started leak testing my system and I see a few little bubbles moving around my system. I got rid of all the major bubbles, but the pump seems to be running a little louder now and I don't know if an air pocket is trapped in there or something. It seems to be running good with no leaks so far so I was just wondering if that's just how it is. I'm running just distilled water btw, with an MCP655 pump.
 

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Premium Member
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It will quiet down over time and all bubbles will be removed. Just be sure to leave the cap off your res/t line while leak testing to purge the remaining air.
 

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Leak testing is personal opinion, I usually run 24hrs, or a tad more if theres still air in the system. Lightly tapping the tubes, shaking the rad, and tilting the case will help speed up the bleed process.
 

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Back to Building
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Yeah the bubbles eventually just worked themselves out of my loop. Took about a day, maybe a bit more
 

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The Newt in Overclock.net
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I never leak test. Just triple check everything.
Fire it up and sit ready to kill the power.
Never had a leak and I tear this thing apart quite frequently.

If the 655 is the variable speed model, turn the speed all the way down, then ramp it up for a few seconds, then drop it back down. that helps dislodge air in the radiator for me.
Also, giving the system a good shake while it's running. Just make sure your PCI-e cards are very secure.

The air bubbles will take a few days to fully get worked out.

*edit* oops, looks like U solved it
 

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Discussion Starter #11
This is my first loop so I knew I was gonna leak test for a while before I had enough confidence to mount it but it's been running for a few hours now with no leaks, bubbles working themselves out and I'm starting to get REAL excited lol. I'll wait till after my racquetball game to at least give it a few more hours of consistent running and mount it up. Then snap a few pics and post them up!
 
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