71 Lt-1 Emissions System - NCRS Discussion Boards

71 Lt-1 Emissions System

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  • Mark A.
    Very Frequent User
    • February 1, 1996
    • 299

    71 Lt-1 Emissions System

    Where Can I Find A Flow Chart For The Components Of The Emissions System? I Would Like To Know How The Carb, Fuel Cannister, Air System, Etc, All Work Together. Any Help Would Be Appreciated. Mark
  • Joe L.
    Beyond Control Poster
    • February 1, 1988
    • 43198

    #2
    Re: 71 Lt-1 Emissions System

    Originally posted by Mark Albertus (27234)
    Where Can I Find A Flow Chart For The Components Of The Emissions System? I Would Like To Know How The Carb, Fuel Cannister, Air System, Etc, All Work Together. Any Help Would Be Appreciated. Mark
    Mark------


    I think the best description you're going to find in a commonly available reference will be in the 1971 Chevrolet Chassis Service Manual. You might find a better description in an old edition of a Mitchell's Emission System Manual, but I don't know where you'd find one of those.
    In Appreciation of John Hinckley

    Comment

    • Mark A.
      Very Frequent User
      • February 1, 1996
      • 299

      #3
      Re: 71 Lt-1 Emissions System

      Thank You Joe, Mark

      Comment

      • Mike E.
        Extremely Frequent Poster
        • February 28, 1975
        • 5136

        #4
        Re: 71 Lt-1 Emissions System

        Jack Humphrey wrote an excellent article on the CEC system for 71's in a recent Restorer article. That's the best resource I've found. A second really good resource i(one which Jack drew from)is an 8 1/2 by 11 booklet (one of a series in 1971) entitled "Theory and Diagnosis--Chevrolet Emission Controls". It's GM ST 343-71. I see them on ebay fairly regularly.

        Comment

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