3/4 point unit repair?

Discussion in 'Carburettor' started by gbk, Jul 19, 2019.

  1. GBK

    gbk Paid Member Paid Member

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    is it possible to repair these? I’ve attached a vacuum pump to various ports on mine and blocked off the others and I can’t get the pushrod to withdraw. I suspect the diaphragm has gone.
     
  2. rubjonny

    rubjonny Administrator Admin

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    not easily no, even if you can split them I dont know of any rebuild kits you can buy. back in the day when I was teaching myself these I just bought 3 spare carbs in a job lot and stripped them all down. tested all the parts individually and used them to rebuild my totally knackered unit to fully functional :)
     
  3. GBK

    gbk Paid Member Paid Member

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    I suspected as much. Unfortunately these days, old pierburgs are like hens teeth. I've got a couple of old ones myself but the knackered one's from an automatic. I suppose a non-auto version just won't have the increased idle speed, not a major issue really.
     
  4. rubjonny

    rubjonny Administrator Admin

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    edit: I take it back the auto 3/4 is not the same as manual, ETKA is quite confusing :lol: the manual ones have 3 point, auto and aircon have 4 point :thumbup:

    I guess if you pipe it up like a 3 point it'll work just the same though?
     

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