Adjustable Vaccum Advance unit ?'s

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by Executioner, May 11, 2000.

  1. Executioner

    Executioner 1/2 ton status

    Feb 22, 2000
    Likes Received:
    Temp. Ft. Walton Beach Fl. home=Tucson, Az.
    Adjustable Vaccum Advance unit ?\'s

    Getting some pinging on the freeway at light troutle, I think its the adj. vaccum advance unit on the distrb.
    Does anyone know which way to turn the adjustment on the unit to give less advance ?
    Thanks alot
  2. cityfarmer2

    cityfarmer2 Guest

    Re: Adjustable Vaccum Advance unit ?\'s

    I believe it is out I have one on mine but haven't touched it in months. But what I remember is out to decrease and only a couple of turns each try. If that doesn't fix it you need to change the spring set up. Good luck Gary...

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