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Vaccum Line

Discussion in 'Early CJ5 and CJ6 Tech' started by bdford123, Sep 23, 2011.

  1. Sep 23, 2011
    bdford123

    bdford123 Member

    Breckenridge, CO
    Joined:
    Nov 20, 2007
    Messages:
    107
    Any possible problem with having the vacuum line that was supposed to go to my wiper disconnected? Do I need to permanently plug hole?
     
  2. Sep 24, 2011
    bdford123

    bdford123 Member

    Breckenridge, CO
    Joined:
    Nov 20, 2007
    Messages:
    107
    Upon my just now inspection, the vacuum line that was supposed to go to the wiper is open, to my chagrin. I thought that it was plugged. Could this cause problems with fuel output at high rpm or speed?
     
  3. Sep 24, 2011
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,524
    Assuming you have a double diaphragm pump....
    Shouldn't affect the fuel side of the pump unless something amiss with the pump.
    I would plug or repair the line for no other reason than keeping debris out.
    Shouldn't affect engine performance (vac leak) as it's not actual engine vac that's leaking (mechanically produced vac).
     
  4. Sep 24, 2011
    bdford123

    bdford123 Member

    Breckenridge, CO
    Joined:
    Nov 20, 2007
    Messages:
    107
    I just kind of thought that if the pump was creating vacuum, and there was no "wall" so to speak in the form of the blocked line, there would be endless air and no push... Don't really know how to put that into better words. Are you saying that the fuel pump is mechanical, spins, pushes fuel, and as a byproduct, creates vacuum.
     
  5. Sep 24, 2011
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,524
    if dual action/diaphragm pump, one side pumps fuel, the other creates vac/suction for wipers.
     
  6. Sep 24, 2011
    bdford123

    bdford123 Member

    Breckenridge, CO
    Joined:
    Nov 20, 2007
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    107
    How do I find out if this is a dual action diaphragm pump?
     
  7. Sep 24, 2011
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
    Joined:
    Nov 27, 2006
    Messages:
    2,793
    the dual pump (vacuum and fuel) will have two intake lines and two output lines.

    The vacuum pump pumps a higher pressure than the fuel pump does if you get the two mixed up.
     
  8. Sep 28, 2011
    bdford123

    bdford123 Member

    Breckenridge, CO
    Joined:
    Nov 20, 2007
    Messages:
    107
    doesn't change a bit plugged or not... :(
     
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