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Can't Prime F134 Oil Pump

Discussion in 'Early CJ5 and CJ6 Tech' started by jglad, Jul 19, 2009.

  1. Jul 19, 2009
    jglad

    jglad Village Idiot

    Glenville, WV
    Joined:
    Oct 5, 2008
    Messages:
    123
    I have a rebuilt F134 engine that I am starting for the first time and I can't get the oil to start circulating. I tried packing the oil pump gears in light grease but it still won't pump. Does anyone have any tricks for getting the oil pump primed? My next question is, can the F134 oil pump be removed and replaced with the engine still sitting in the mounts on a CJ5?
     
    jglad, Jul 19, 2009
    #1
  2. Jul 19, 2009
    clay

    clay Driving

    Hopkinton, MA
    Joined:
    Aug 14, 2005
    Messages:
    338
    Yes you can remove the pump. I primed mine by taking a large plastic syringes or you could use one of those baby nose sucker things and pushing oil into the hole that the oil pressure gauge hooks to on the back of the engine. it seemed to work well.
     
    clay, Jul 19, 2009
    #2
  3. Jul 19, 2009
    w3srl

    w3srl All-around swell dude Staff Member

    Port Orange, FL
    Joined:
    Nov 6, 2002
    Messages:
    4,275
    I cut the top off a 2-liter pop bottle and poured in a quart of new oil. Dunk the oil pump in it and spin the gear until you have oil pumping up out of the pump and then reinstall it. You should see oil pressure while cranking before you put power to the ignition!
     
    w3srl, Jul 19, 2009
    #3
  4. Jul 19, 2009
    alexa

    alexa New Member

    Joined:
    May 1, 2008
    Messages:
    40
    I used a syphon hooked to the oil pressure gauge input and put a quart of oil in before cranking the engine. All seemed to go well. I did not check the prime of the oil pump.
     
    alexa, Jul 19, 2009
    #4
  5. Aug 9, 2009
    jglad

    jglad Village Idiot

    Glenville, WV
    Joined:
    Oct 5, 2008
    Messages:
    123
    Got it fixed. I wound up having to drop the oil pan to fix the problem. The oil pickup was stopped up. I had cleaned the screen on the pickup but I guess I forgot to check the cast aluminum elbow that bolts to the block. It was clogged with old sludge in the bend.
     
    jglad, Aug 9, 2009
    #5
  6. Aug 10, 2009
    uncamonkey

    uncamonkey Member

    Greeley CO
    Joined:
    Jun 2, 2009
    Messages:
    2,104
    Thanks for the follow up.
    Makes you wonder how long the elbow has been clogged.
     
    uncamonkey, Aug 10, 2009
    #6
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