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Vacuum Reading F134

Discussion in 'Early CJ5 and CJ6 Tech' started by Kevin D, Feb 16, 2019.

  1. Feb 16, 2019
    Kevin D

    Kevin D New Member

    Monroe, NY
    Joined:
    Jan 24, 2009
    Messages:
    36
    what vacuum reading is typical for a healthy F134? I’m only getting 14-15hg. I tried to adjust ignition timing with no improvement. I’m taking reading from vacuum port below carb. I have a t fitting there for easy hookup. Wondering if not isolating it from PCV circuit is throwing off reading ?
     
    Kevin D, Feb 16, 2019
    #1
  2. Feb 16, 2019
    PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Hills of NH
    Joined:
    Aug 3, 2003
    Messages:
    9,820
    Yes.
     
    PeteL, Feb 16, 2019
    #2
  3. Feb 17, 2019
    scoutpilot

    scoutpilot Member

    Asheboro, NC
    Joined:
    Jun 7, 2014
    Messages:
    428
    Vacuum is best taken from the intake manifold. Not the carb throttle.
     
    scoutpilot, Feb 17, 2019
    #3
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