Results 1 to 8 of 8

Thread: silvia still leaking after replacing gasket seal!

  1. #1
    Junior Member
    Join Date
    Jul 2007
    Posts
    12

    silvia still leaking after replacing gasket seal!

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi peeps,

    A month ago I replaced the seal on my 2nd hand silvia because it had started leaking a bit around the portafilter. I also cleaned it up a fair bit and replaced the shower screen.
    The result was a better pour and less leaking... but still some leaking.

    I suspected that it was because I had been a little lazy and not bothered to completely remove some of the old hardened coffee oil gunk from the brass behind the old seal. I did a pretty good job, but thought that the little bits of gunk that wouldnt come off couldnt cause too much of a problem.
    So when it kept leaking I thought Id get another new seal and try again, this time being hard core and cleaning it thoroughly... Id assumed that the bits of hardened gunk must have been creating an uneven surface allowing water to get out...

    I even carefully scrapped away the gunk from the edges using a pointy metal tool (kind of like those horrible dental instruments), trying to avoid actually scratching the brass.

    In the end it all looked good and clean and free from gunk ( I used a flat head screw driver with a cloth wrapped over the tip to do a final clean out).

    But having put in the new seal and using it over the last day Im still getting leaking around the portafilter!!
    And Ive made sure Ive pulled it on far enough (almost 4 Oclock!)...

    Not sure what I can do, and Im getting sick of buying $10 seals...

    Any advice? Can there be other issues that cause leaking around the portafilter? Should I bite the bullet and let a pro have a look? (I was trying to save the $70 bucks and learn something on the way...)

    The only other thing to mention is that the leaking seemed to start when I bought a synesso double basket from Jet black espresso. But then it seemed to still leak even when I tried the old baskets.

    Cheers,
    Matt

  2. #2
    Senior Member
    Join Date
    Feb 2008
    Posts
    1,339

    Re: silvia still leaking after replacing gasket seal!

    Hi Matt

    Are you absolutely sure its leaking from the group head or portafilter?

    There is a possibility that the boiler gasket is leaking, and water is running down around the sides of the head. Scale is pretty amazing stuff and can work its way betwen the boiler and base, and then the gasket perishes sufficiently to cause a small leak.

    Make sure you dont touch anything electrical while doing the following!

    If this is the problem, you will be able to see the leak if you remove the top and use a torch to take a look down around the base of the boiler when the machine is on, and often where the bolts are. There may even be signs of corrosion on these.

    Worth a look - again though, just be careful.




  3. #3
    Senior Member greenman's Avatar
    Join Date
    May 2007
    Location
    Perth, Western Australia
    Posts
    3,170

    Re: silvia still leaking after replacing gasket seal!

    Just a thought Matt, did you use a spacer when you changed the seal? I read somewhere that the newer seals may need a spacer to work effectively?

  4. #4
    Senior Member
    Join Date
    Feb 2009
    Posts
    268

    Re: silvia still leaking after replacing gasket seal!

    i replaced the seal in mine when i got it, leaked a little when doing a back flush but seems to have "broken in" after a little use.


  5. #5
    Junior Member
    Join Date
    Jul 2007
    Posts
    12

    Re: silvia still leaking after replacing gasket seal!

    Hi Greenman,

    No I didnt use a spacer. I assume they would be available at places like Jetblack esspresso?
    I will get one and try to remove my current seal without damaging it (anyone ever done that?).

    And thanks for the insight about the other possibility Cuppacoffee. Im pretty sure its the the gasket seal, just because of the variation in the leak after the work I did...

    Cheers,
    matt



  6. #6
    Senior Member
    Join Date
    Jan 2007
    Posts
    541

    Re: silvia still leaking after replacing gasket seal!

    Matt

    Mine [5+YO] has a similar problem.
    I twice replaced the gasket and used a spacer each time, though one of my gasket suppliers said I dont require it.
    The original gasket seemed thicker than the new ones.

    Interestingly, mine does not seem to leak when I back flush so I think part of the problem may be the top profile of the basket.
    I have not tried a 30 sec backflush though

    My leak is very minor and only occurs on 3 in 10 shots so Im putting up with it until someone tells me what is going on.

    I was eventually going to try another without the spacer, thinking that a little more twisting of the PF may do the trick, after reading your post...perhaps not.

  7. #7
    Site Sponsor
    Join Date
    Aug 2006
    Posts
    1

    Re: silvia still leaking after replacing gasket seal!

    Quote Originally Posted by 57445656514A6C564043415640405C330 link=1244699584/4#4 date=1244769591
    I will get one and try to remove my current seal without damaging it (anyone ever done that?).
    Yes use very thin flat screw driver. Could be that you are overdosing or your coffee is a bit fine so does not allow to travel at the right speed.

    Remember that this machine uses a soft seal, and the amount of coffee could make it happen. This is why most people chage the basket to a dipper one

    Renzo
    Di Bartoli Home Barista Centre

  8. #8
    Junior Member
    Join Date
    May 2009
    Posts
    11

    Re: silvia still leaking after replacing gasket seal!

    Quote Originally Posted by 3325202031333F36363535500 link=1244699584/1#1 date=1244701315
    Hi Matt

    Are you absolutely sure its leaking from the group head or portafilter?

    There is a possibility that the boiler gasket is leaking, and water is running down around the sides of the head. [ch65533]Scale is pretty amazing stuff and can work its way betwen the boiler and base, and then the gasket perishes sufficiently to cause a small leak.

    Make sure you dont touch anything electrical while doing the following!

    If this is the problem, you will be able to see the leak if you remove the top and use a torch to take a look down around the base of the boiler when the machine is on, and often where the bolts are. [ch65533]There may even be signs of corrosion on these.

    Worth a look - again though, just be careful.



    I agree with this as it has happened to me and the boiler ended up dying.

    Be careful while the cover is off - electricity bites!



Similar Threads

  1. Help! Silvia Leaking Grouphead Seal?
    By azeworai in forum Brewing Equipment - Midrange ($500-$1500)
    Replies: 46
    Last Post: 12th February 2012, 08:30 AM
  2. Silvia leaking from grouphead gasket
    By paulio in forum Brewing Equipment (non-machine specific)
    Replies: 8
    Last Post: 28th April 2006, 10:12 PM
  3. Replacing Group Seal - Part 2 HELP!!!!!
    By franjae in forum Brewing Equipment (non-machine specific)
    Replies: 13
    Last Post: 2nd July 2005, 08:46 PM
  4. Replacing Group Seal
    By franjae in forum Brewing Equipment (non-machine specific)
    Replies: 1
    Last Post: 17th June 2005, 02:15 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •