Help me solve this leak in my Russian 91%

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ZombieJuice

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Nov 12, 2013
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I have the Russian 91% (the real one not a clone) and have been experiencing leaking that is driving me mad, I can't figure out the cause. I'm experienced with RBAs and have totally taken apart my Russian trying to figure out why its leaking but I'm coming up short with a solution.
The leaking is coming out of the air hole. Usually it will vape fine while the tank is completely full but as soon as it drops down to about 3/4-2/3 full the leaking starts. It begins as a gurgle when I take a hit but soon progresses into a steady amount of leaking. The airflow canal will be full of juice with the excess running out. It doesn't pour out like a faucet but it is a steady flooded gurgle that runs out the hole.

I use micro coils with cotton usually around 10-14 wraps of 28g around yarn needles (which are pretty thick for a needle 1.0-1.6ohm). I position the coil at a slight angle in between the posts just a few degrees off from the juice canals. My cotton wick runs through the coil and sits on the deck in front of the juice canals.

I have tried raising and lowering the coil from the airhole. Up to 6-10mm above it down to 1-2mm above it and everything in between. I have experimented with using a lot of cotton to where you can't really pull the wick through the coil and using very little cotton that can be easily pulled through the cotton (and amounts in between) . Still nothing works.

I have used the clear tank and the metal tank sections seeing no solution to the problem. I have meticulously inspected all o-rings with a jewelers loupe (magnifying glass) and watched for leaking at all the joints. I have also added extra tiny o-rings to the adjustable center pin to guarantee an air tight seal in that location. Still no solution.

I am not sucking too hard or blowing into the drip tip. My voltage is correct and I'm using a Provari with a pro-ring. I have also tried many different airflow corrections tightening and loosening the airflow control screw, I even switched out the airflow screw to a new one.

One thing I noticed after taking apart my Russian was that excess juice from wick seemed to have "migrated" from the edge of one lead and ended up running over the airhole under coil. But I would think as soon as I took a hit air would shoot the excess juice out/away from airhole.

I also thought that maybe somehow my wicks were sitting too close to canals and were constantly wicking juice causing excess to drip off of the coil into the airhole. So I moved them all the way back from the canals but still the problem persists.

It gets so bad that every hit has a intense gurgle. I will hold a paper towel over the air hole on the outside of the Russian and blow to clear the excess juice but the juice keeps coming out and never seems to clear. What could cause this steady leaking/supply of juice?

Please help me at least diagnose this problem so I can go about fixing it. It's got to be an air leak of some kind right? I'm losing my mind, I'm usually very good at figuring these things out but I am stumped. Hopefully a vape god will come along and teach me something.

P. S. Obviously I have carefully inspected all parts of the Russian and see no bad threads, dents or damage of any kind.

Matt

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donwuan

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May 17, 2013
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Vacuum issue? I have this issue with my kayfun lite clone but not with my russian clone.

For me unless it sits vertical at all times it leaks for some reason. Someone more experienced will chime in.

Only thing that help me is flipping my device with kayfun attached upside down and blow through the mouth piece.

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IceCreamMan

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Feb 20, 2014
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The four things I would think of-

1. If you lay it on its side without enough juice to cover both the channels coming under the chimney it will lose vacuum and leak. One juice channel acts as the air inlet while the bottom one acts as a drain. It will not happen with a full to near full tank as both channels will stay covered even laying sideways.

2. Chimney o-ring not seating, damaged, etc. or possible thread/o-ring damage on tanks/topcap

3. Wick touching the posts causing juice to flood the air hole/center pin

4. Bad insulator on the center post
 

steel bender

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With your airflow screw removed, it will create the least amount of suction (without drilling out the airhole), pulling less juice to the wick.

If you have too much cotton inside the coil, it won't wick well, but may still pull up juice and drip into the air hole.

These two things, it sounds like you've already tried, but they should help a little.

What I think may make the difference for you is putting the ends of your wick directly ON TOP of those channels, just be careful not to pack them in there. Heck, if it still leaks, go ahead and try packing em.

This is of course, based on the assumption that you have checked out all the pieces and have them in the correct place. One loose or slipped o-ring could potentially cause a loss of the pressure inside the tank and cause leaking.

If this doesn't help, take some pictures for us.
 

ZombieJuice

Full Member
Nov 12, 2013
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If you need to see some specific let me know, all seals look good although still getting seepage from the center pin screw in bottom. Although I don't see how that would cause my leaking...

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ZombieJuice

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Nov 12, 2013
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Kentucky
Wow I just noticed something, there was an o-ring in the "extras" bag that comes with it that was an odd size. It was smaller than the tank o-rings. It fits perfectly around where the chimney screws on. It sits right below the chimney where the juice channels are. I put this on and filled up tank, I will see if this fixes my issue. I hope so. I'm pretty sure the o-ring I'm speaking of goes above the threads on the stock drip tip but maybe it will work...

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crxess

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Wow I just noticed something, there was an o-ring in the "extras" bag that comes with it that was an odd size. It was smaller than the tank o-rings. It fits perfectly around where the chimney screws on. It sits right below the chimney where the juice channels are. I put this on and filled up tank, I will see if this fixes my issue. I hope so. I'm pretty sure the o-ring I'm speaking of goes above the threads on the stock drip tip but maybe it will work...

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That is likely a spare for the Chimney Cap to Tube seal. Is that one in place?

No reason for one on the Bottom of the Chimney tube.

Do you feel tension as you attach each tank section - o-ring pressure? one may be undersized.
All Rocket Tanks needed the lower o-ring replaced, even though it was the same size as the rest and both metal sections identical. But it actually weeped out the seam.
 
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IceCreamMan

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It gets so bad that every hit has a intense gurgle. I will hold a paper towel over the air hole on the outside of the Russian and blow to clear the excess juice but the juice keeps coming out and never seems to clear. What could cause this steady leaking/supply of juice?

This is the wrong way to clear the juice. You need to hold it upside down and blow through the air hole and let it clear out the drip tip. Blowing through the drip tip like you described will only pull more juice into the chamber making it flood worse.


Are you holding it more horizontal or vertical when you vape? And do you lay it down on its side any?
 
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