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emissions removal

Discussion in 'The Garage' started by 78Suburban, Oct 10, 2005.

  1. 78Suburban

    78Suburban 1/2 ton status

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    there is a fitting behind my carb on the intake that has a two lines running into it. one goes into what I think is the charcoal canister, and the other maybe into the gas tank.. anyway this little fitting was loose.... I'm wondering, would my motor run ok if I just unscrewed it and plugged the manifold? I don't have to pass any emmissions tests, and I will be driving off road mostly..

    :bow:
     
  2. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Behind the carb , on a 70's truck ?

    I believe that tap is for the auto tranny modulator , and tees off for anything else that needs manifold vacuum .
     
  3. 78Suburban

    78Suburban 1/2 ton status

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    oh, sorry for my ignorance... well, what is the thing on the firewall that the t fitting runs into?
    since it was loose, should I take it off, wrap it in teflon tape, and reinstall it?
     
  4. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    Do you have or had a/c ? Could be the vacuum for the vents , goes into a ball on the firewall to hold vacuum .
     
  5. 78Suburban

    78Suburban 1/2 ton status

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    yes, I have AC.. it goes into a black thing on the firewall...
    If this fitting were loose, would it make my truck idle poorly?
     
  6. diesel4me

    diesel4me 1 ton status Premium Member

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    yup..

    ANY vacuum leak will affect the idle quality,and can cause hesitation,among other things.. :crazy:
     

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