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Vacume

Discussion in 'Intermediate CJ-5/6/7/8' started by T Todd, Aug 5, 2006.

  1. T Todd

    T Todd Mostly Confused

    Why can I open the vacume line to the distributor without effecting the idle speed? If I open an unused line on the intake the idle will increase.
    This is a 304.
     
    T Todd, Aug 5, 2006
    #1
  2. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    The throttle butterfly closes off the carburetor vacuum tap (ported vacuum) at idle.
     
    timgr, Aug 5, 2006
    #2
  3. T Todd

    T Todd Mostly Confused

    Thanks. The reason I'm checking is I have a big dead spot in the throttle just off idle. Once the rpm's come up it pulls very well.
     
    T Todd, Aug 5, 2006
    #3
  4. Chuck

    Chuck Sponsor

    Can you borrow a vacuum gauge from someone? If it will hold vacuum it’s good.
     
    Chuck, Aug 5, 2006
    #4
  5. MA74CJ5

    MA74CJ5 Member

    Maybe the accel pump in the carb?
     
    MA74CJ5, Aug 7, 2006
    #5
  6. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    The usual problem with 2100s is the power valve. You can replace it without rebuilding the carb, but the carb has to come off the manifold. Don't be shocked if your rebuild kit is $50+ ... the 2-stage power valve adds about $25 to the price of the kit.
     
    timgr, Aug 7, 2006
    #6
  7. Chuck

    Chuck Sponsor

    Yup, bought one two days ago $43 AutoZone
     
    Chuck, Aug 7, 2006
    #7