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I cannot unscrew the top of the Mukka Express machine from the bottom!

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If the bottom is screwed too tight on the top, you could try to warm the with hot water and cool the bottom with cold. This could help to expand the top and make it easier to unscrew.

Posted on Jul 18, 2011


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The pressure valve on my Mukka Express doesn't pop up. Instead after 10 minutes the valve is forced off. I rinse it really well and have even put it in boiling water. How do I get it to pop up?

I have the same problem. I cleaned all the parts, changed the pressure valve, cleaned the gasket, filters, everything. I hear the steam escaping from the overflow valve and if at that point I manually pull the valve up, then it does (barely) pop and steam the milk, but not as well as it used to.

Jul 25, 2011 | Bialetti Mukka Express

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My mukka is shooting steam out of the small valve/washer thing on the bottom pot part. As it gets hots the valve pops up (but not with gusto like it used to do) and then I get a little coffee mixed in with...

I had the same problem and saw this solution in another bialetti mukka problem report, which made sense: "the safety valve on the lower boiler chamber is there to release pressue in case too much prssure builds up in the pot when brewing. If youy have an 11 mm wrench you can take it out and clean it by pulling on the outsidepart, there is a little knob that may be grabbed by a tweezer, gently pull it out, it is spring tensioned, and run water in the opposite end, Chances are some coffee grounds particles got in it and it is not seating good. after cleaning put a few drops of olive oil in it , the inside part. Should seal better and still funtion as a safety valve. Or you can leave it in place in the pot and just pull on the outside , flush with water and then put a few drops of olive oil in it. While you are at it, put olive oul on the threads, olive oil film and the the rubber seal and add a little to the rubber button on the top valve."

Jun 17, 2011 | Bialetti Mukka Express

1 Answer

I was looking for instructions for a Bialetti Mukka Express ;and also does this unit make espresso?

Here is the owner's manual. Also, by filling the filter with espresso grounds and using water, you are making espresso. It only becomes cappuccino by adding milk.

Mar 30, 2011 | Bialetti Mukka Express

1 Answer

Lost the measuring cup! Does anyone know how much

There is a line inside the water compartment, look for the rectangles that go from the bottom up in the walls, there is a line above them... that is the level for gas stoves, for electric ones just put a little more.

Mar 15, 2010 | Bialetti Mukka Express

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I cannot unscrew the top...i have waited until cool and taken out the pressure still wont unscrew! help !!

dip the top part upside down in warm water, make sure the bottom doesnt warm up, the material from the top will expand and comes loose from the bottom, it might need powerfull hands anyway good look

Oct 27, 2009 | Bialetti Mukka Express

1 Answer

Espresso irregularly spurts out the center post

could it be that the gasket is oversized and it covers the small holes ?

Mar 08, 2009 | Bialetti Mukka Express

1 Answer


put some drops of machine oil at the point the two parts join and srew it and unscrew it four times. then you make coffee again!

Feb 16, 2009 | Bialetti Mukka Express

1 Answer

Mukka Express spits out coffe from the screw section & steam valv

it did that to me too, so I reduced the amount of milk to the indicated level inside. No more mess after that.

Jan 24, 2009 | Bialetti Mukka Express

1 Answer

Mukka valve broke


Dec 07, 2008 | Bialetti Mukka Express

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