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low oil pressure at idle

Discussion in 'Early CJ5 and CJ6 Tech' started by campwillys, Jan 16, 2005.

  1. Jan 16, 2005
    campwillys

    campwillys Member

    Georgetown , New...
    Joined:
    Jan 8, 2005
    Messages:
    65
    It reads almost zero but if I give it gas with it in nuetral it will go up to about 25 is this normal? I have a 4 cylinder flatie in it
     
    campwillys, Jan 16, 2005
    #1
  2. Jan 16, 2005
    justin

    justin New Member

    washington
    Joined:
    Oct 24, 2004
    Messages:
    14
    Could be oil pump is going out, or could be gage line/gage. Try pulling gage line off engine and gage, push air through it via air compressor. reattach and see what see does. should get about 25-40 idle, and increase with engine rpms increasing.
     
    justin, Jan 16, 2005
    #2
  3. Jan 16, 2005
    campwillys

    campwillys Member

    Georgetown , New...
    Joined:
    Jan 8, 2005
    Messages:
    65
    ok thanks for info will try tomarrow afternoon
     
    campwillys, Jan 16, 2005
    #3
  4. Jan 16, 2005
    oddfirejeeper

    oddfirejeeper Active Member

    Hamilton, MI
    Joined:
    May 5, 2004
    Messages:
    1,253
    it could be the front cover is worn to far as well..seeing as how it is aluminum and it expands when heated. mine does the same thing when it is warmed up with new hi-vol pump in it
     
    oddfirejeeper, Jan 16, 2005
    #4
  5. Jan 16, 2005
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    He has a 4-cylinder with the oil pump on the side of the block, not in the timing cover like the Dauntless V6.

    I had pressure issues too before my rebuild, mainly due to worn bearings. I installed a new (stock) oil pump and it solved my problem until I finally rebuilt the engine. Now I have 40PSI at idle (cold) and it settles down to about 20 PSI at idle when hot. Never goes above about 45 PSI running once it is warmed up.
     
    w3srl, Jan 16, 2005
    #5
  6. Jan 19, 2005
    campwillys

    campwillys Member

    Georgetown , New...
    Joined:
    Jan 8, 2005
    Messages:
    65
    I did a oil change w/MMO and changed filter and cleaned out filter housing it seemed to bring it up.
     
    campwillys, Jan 19, 2005
    #6
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