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k-cup rim opens up during brewing

I have trouble with my k-cup spitting grounds inside the machine where the k-cup sits during brewing.

I don't believe the problem is the puncture needles or the top gasket. I have cleaned and checked both of these, many times, and the needles seems to be puncturing normally. I think the problem is the k-cup ITSELF.

I have observed that, in about 2-3 out of every 5 cups, the top rim of the k-cup actually separates... so, the leakage is not coming from the needle hole area. The leakage is coming from the edge of the k-cup. It is as if there is too much pressure INSIDE the k-cup during brewing, which forces the top covering of the k-cup, causing it to separate from the plastic cup.

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Who's K-Cups are you using?

I would recommend you speak with Keurig to let them know and to see if they have a fix.

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I did, multiple times. They have no solution. I got rid of my THIRD Keurig with the same problem and will never buy another.

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I was having the same frustrating problem and I believe I have found a solution. My machine was not clamping down on the kcup lid with enough force to maintain a good seal, probably a result of heat over time used. I simply put a thin rubber band under the edge of the lid of the kcup which increased sealing pressure on both the cup rim and the piercing needle seal. My machine works like new again and brews a great cup of coffee without the grounds in the cup or bursting out all over the counter. A thin o-ring that will fit snugly under the kcup lid might be a better choice, and you must remember to remove it before throwing the kcup into the trash.

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It seems to me the water pumped into the k-cup has no place to go. My first thought is to look at the spike in your brewer at the bottom of the k-cup cradle and make sure it is straight, sharp and clear. Run a paper clip through it to be sure. That's the route for the brewed coffee travels to leave the k-cup and drain down into your mug.

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Only happens with Dunkin k-cups for many users. Same issues discussed on Amazon. Dunkin decaf is the only one of 5 brands that it happens with me.

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@ljpne to much air inside the k-cups can cause this but that would be a manufacturer defect which we cannot fix. Change your brand and where you buy the K-cups. See if it continues. If your K-Cups have a domed, rounded top use a small needle and puncture the top before using it in your Keurig

If it does, you do want to clean the puncture needles. your Keurig has two, one on top and one on the bottom, If anyone of these two is clogged you will get a K-cup explosion due to excessive pressure inside the cups. I would start by cleaning the puncture needles since that would be the easiest fix. How to open and clean Keurig Coffee Maker

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9 Comments:

Try some real Keurig K-Cups to see if the problem is unique with the brand you had bought. You may want to give then a call to complain if the real ones don't have problems.

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I had the problem... and still do. I use the pods which specifically ARE Keurig branded. I examine every pod now before inserting it the machine, and have discovered that the tops of the "cups" are not milled uniformly (flat). Without exception, the ones that are not flat (have a slight elevated lip on the outer edge), cause the foil cover not to seal... and to blow out. This is a quality problem with the Pod manufacturer, and not the machine. This is my third Keurig machine…. only 2 months old, and will be my last if this is not resolved.

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If you are using a reusable (plastic) k-cup that you fill yourself there are two good answers and one good cure. Either you are filling the k-cup over 90% full and the pressure pops the lid open - or the brewer tension on the top of the k-cup has weakened over time and the lid is allowed to open up. The solution is a $3 part on ebay that you add to your keurig brewer. It's easy - no tools - take less than a minute - it works - it's guaranteed - click this link:

https://www.ebay.com/itm/171568701670

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I find it is only busting on Folgers 1850. Newman has no problems!

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i have same issues k cup busting and seems to be only with tims kcup brand

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Previous answer is bad advice.

If the foil lidding is separating it is because of inferior sealing. This could be caused by a few reasons.

My suspicion is that you have purchased clones rather than original Keurig brands. Thermal sealing done by packaging equipment other than Keurig Incorporated can be less reliable.

It could also be a polypropylene compatible issue from a Chinese manufacturer of knock off cups. (Water temperature from brew cycle causes seal to fail)

Either way, there is a high probability that this is a defective cup purchase. If it continues after you try different capsules, please continue thread and I can offer a final suggestion.

Darren

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16 Comments:

Darren Footz "Previous answer is bad advice" really? Why?

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sorry for delay in response turkey,... our experience is that recommending to consumer to clean piercing elements (needles) could damage them, I should have responded with "better advice" as that was rude. ... we have considerable experience in this field

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I had two bad 48-count boxes of Green Mountain half-caff, not “clones” or counterfeits, codes were confirmed by Keurig and they replaced both boxes. From both boxes, 9 out of 10 pods were clogging. During same period, 19 out of 20 other pods (Starbucks Veranda and Sumatra, Barista Italian roast, Gevalia, Green Mtn Dark Magic decaf) brewed perfectly. Now from the replacement box from Keurig, the second half-caff pod seam split open. It’s too soon to know if the problem continues with this box but I’m afraid this indicates a manufacturing problem of wider scale. For what it’s worth, I pre-punctured every pod by pressing the pod down into the bottom needle. So… in my case it’s not a case of excess pressure in the sealed pod nor is it a case of counterfeit pods. I suspect: 1) the pods are overfilled, 2) the coffee is ground too fine, or 3) there’s a problem with filter built into the pods. I’ve shared pod info with Keurig so hopefully they find and resolve the issue. Meanwhile, no more Green Mtn Half-Caff pod purchases for me.

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I’m having the same issue with my green mountain breakfast blend light roast I normally buy my coffee from Target but the last two boxes I’ve bought at Walmart and there’s a definite difference in the KCups with Target the cups have a bubble as if they have been blown up with Walmart they’re flat as if they were at high a altitude and brought back down then at the end of my brew the cup will open at the rim and it spits coffee grounds out....I never had this problem until I changed where I purchased my cups so I am going to buy cups from Target and see if there’s a difference at all.....I know my stuff not clogged either because after every cup brewed I brew 4-8 ounces of water after every cup, change my filter and descale as recommended but if also checked the K cup and the foil top literally separates from the pod itself so I guess I will see if buying them from Target makes a difference

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I have concluded my problem was caused by the machine rather than the pods. I had two K500 models, both of which exhibited the problem. I went through all recommended procedures to ensure the needles were clear, all to no avail. A few months ago, I bought a K-Elite. Long story short, the K-Elite solved my problem. In the past 400 plus pods I've brewed, only one pod has leaked at the seam. I had kept my box of problematic Green Mountain half-caff pods and decided to try them in in my K-Elite. They brewed perfectly, not a single one leaked.

I'm not suggesting anyone go buy a new machine nor that none of the pods could be defective. I'm saying MY machines were defective. Why? I'll never know. I purchased the pods directly from Keurig. Bottom line: THE PODS WERE NOT DEFECTIVE, THE MACHINE WAS. If you wish to experiment with rubber bands and o-rings to increase the clamping force on the pod, go for it. Frankly, I don't have the patience nor inclination to do so.

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I have been using genuine k-cups for years and have on occasion found the lid separating from the cup. Recently, it has been happening much more frequently. Usually the lid separates about half way through the brew cycle. The bottom and top needles are always clean. I too believe this to be the result of an inferior seal.

As recommended by others, I purchased some thin foam sheets ( about 1/8” thick) from the dollar store and cut out a donut shape (large hole in the middle) slightly larger than the top diameter of the k-cup. I place the donut shaped piece of foam over the top of the k-cup when closing the top. This seems to apply enough pressure in most cases to keep the top of the k-cup from opening. The idea being to apply a little more pressure to the top of the cup.

This makes it a little more bothersome to make a cup of coffee, but I get to keep using my Keurig.

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The overpressure condition is caused by the inner filter popping, leaking grounds and clogging the bottom needle. The water being pumped by the coffee maker has nowhere to go so the pressure is enough to pop the top seal. I cut open some different pods to see the construction of them. I found that the Starbucks brand has an added filter shield under the filter pod. It has holes to allow the coffee to go through, but supports the filter pod from popping. I also found that many brands of pods have a larger filter pod inside. The larger filter pod hangs low enough that the bottom needle of the coffee maker can pierce the filter and cause it to leak grounds.

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