MPR leaking through barrel

Discussion in 'Air Arms' started by 5teve L, Oct 24, 2009.

  1. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Whats the cause usually, is it just a seal ?
    I have it in bits & have a seal kit but just checking I don't need anything else while it's apart.
    Cheers
    Steve
     
  2. Scooby

    Scooby Pete Dutton

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    If the air is leaking up the barrel then it's usually the firing valve that is leaking
     
  3. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Crap, thats not good as it's been modded by Ben Taylor due to the reg..... I'll take it apart & see if it's dirty.. Failing that I suppose I will have to get in touch with Ben.
     
  4. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Pete, should the delrin part on the firing pin be the same shape all round, the part that contacts the firing body looks a bit wider at one end than the other, the part that contacts the firing body is larger than at the spring seat, are they all like this or has mine squashed a little do you think ?

    Cheers
    Steve
     
  5. Scooby

    Scooby Pete Dutton

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    Hi Steve,

    If it's a black std AA firing valve then the sealing end should be much thicker than the sping end.

    I'll measure on up later & let you know the size of a new one but I doubt an original one would deform
     
  6. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Sorry, what I meant was that the end that seals against the firing body looks slightly thicker than where it comes back to meet the collar for the spring, almost slightly conical in shape, with the widest point being at where it meets the firing body.. hard to explain...lol.
    I'm pretty sure it's out of shape.. I'll see if I can get a piccy..
     
  7. Kingplinker

    Kingplinker " Horsham HFT champion 2010 "... apparently...

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    Mk4 tommorow then mate ?

    Dave
     
  8. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Yep, if I bother Dave...
    Looks like a new firing pin is in order mate.
     
  9. Kingplinker

    Kingplinker " Horsham HFT champion 2010 "... apparently...

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    Bloomin guns 'eh Steve :rolleyes:

    YHPM btw

    Dave
     
  10. Scooby

    Scooby Pete Dutton

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    Hi Steve,

    This is a brand new firing valve

    http://www.shooting-the-breeze.com/forums/picture.php?albumid=63&pictureid=359


    [​IMG]
     
    Last edited: Oct 24, 2009
  11. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Yeah mine is FUBAR then, it's slightly mushroomed I'd say ;) .. 'mushroomed' thats the word I was looking for earlier, damn this man flu :D

    Cheers Pete, I'll order one up.

    Steve
     
  12. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Got the new pin in, balloon on the end of the barrel & fingers crossed, worryingly though the wife walked into the bedroom & said it looked like some sort of sex toy as it laid on the bed :eek: not quite sure who or what it would be used on though :confused:

    Needless to say I shall be hiding it from now on either way ....:D
     
  13. Kingplinker

    Kingplinker " Horsham HFT champion 2010 "... apparently...

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    Poor cow's only used to a carbine :eek:
     
  14. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Oi, you been knockin off my missus:mad: :D
    Full length here buddy ;)
     
  15. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Ok so I have the same problem again, been gradually getting worse & worse. I have a Ben taylor reg & so the firing pot has been 'modded' :rolleyes: is there anything I can do to stop the leak, I take it the valve isn't seating correctly ?
     
  16. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Hopefully sorted after a stripdown.....well it doesn't seem to leak, just wish the fecking reg worked now, knew I shouldn't have touched the beggar :rolleyes:
     
  17. 5teve L

    5teve L STOP ! HAMMER TIME !

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    Anyone know how to set a reg up :D Rifle works fine just not regged as my gauge goes over 100 bar now :confused: :eek:
     
  18. 5teve L

    5teve L STOP ! HAMMER TIME !

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    OK, all sorted I'm happy to say :)
     

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