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Backflush pressure issue

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  • Backflush pressure issue

    Please let me know if i have posted this in the wrong post of section.

    i'm noticing that when i do a backflush i dont always get the pressure buildup. what could be the issue? i have recorded this as per the youtube video below. any ideas? its hit and miss but its doing more often now. I dont get this issue usually when i pour coffee and unless i have done the grind too fine or something like that . as you can see in the video i did it 3 times and only 1 in the 3 did it build up pressure.

    https://www.youtube.com/shorts/5fVyEIQHgjo

  • #2
    It would be helpful if you named the machine you're talking about.


    Java "Useful information" phile
    Toys! I must have new toys!!!

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    • #3
      Bellezza Espresso Inizio R

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      • #4
        What happens when you are extracting a shot?

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        • #5
          when extracting a shot its usually ok but 1 out of 10 times it would do the same. sometimes i might put too much coffee or playing with the grind setting etc

          so normal operation is you pull the leaver ( yes im aware of pre fusion) , the pressure dial will go to zero and seconds later after the prefusion happens the pressure will build up to 8-9 bar.

          well that doesnt happen 90% of the time during backflushing ( and sometimes pulling shots). what happens is the pressure goes to 0 and stays there until i push the leaver down ( yes can wait how many seconds you want) so no its not normal. It should be building up the pressure after prefusion is complete every single time.​

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          • #6
            Could have a sticky Group Valve...

            Mal.

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