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1955 Willys CJ5 pulling oil into carburetor from oil bath ?????

Discussion in 'Early CJ5 and CJ6 Tech' started by PatC, Nov 23, 2015.

  1. Nov 23, 2015
    PatC

    PatC New Member

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    Hello,

    I have a 1955 CJ5 that I got back on the road last year. I thought my PCV valve may have been causing an issue with the oil being pulled into the carb, but I took it out and cleaned it and I'm still having the same problem.

    Does anyone have any recommendations or questions so I can clarify?

    Thank you,

    Pat
     
  2. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Well, exactly how much oil is being pulled in is the first question.
    Second is do you have the correct level in the oil cup?
    Third is did you clean the filter element itself so there is no oil residue that could be pulled in to the carb?
    Fourth, is the engine tired? Does it smoke, foul plugs, have high oil consumption, a lot of blow by?
    Fifth, do you have the dipstick breather hose to the air cleaner?
     
  3. Nov 24, 2015
    PatC

    PatC New Member

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    1. It pulls enough oil that it pushes through the whole system and look like it's on fire from the white smoke.
    2. I took the oil bath off and cleaned it and filled it with the correct oil level.
    3. I wasn't sure how to clean the element, it didn't seem like it would come out of the canister to clean. I did drain it.
    4. It's been sitting around a long time, but had been running for about a year when it started. It only has 45,500 miles on the motor.
    5. Yes, it has the breather hose on to the air cleaner.

    Thank you!
     
  4. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    If it is white smoke that is indicative of moisture, oil smoke is blue.
    Have you had to add water/coolant to keep the radiator level correct?
    Does the inside of the carb. look oily or have an oil film?
    If it's that smoky from oil the plugs would surely foul pretty quick.....has that happened?
     
  5. Nov 24, 2015
    termin8ed

    termin8ed I didn't do it Staff Member

    Mason, MI
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    Does it do it with the oil bath disconnected from the carb?
    Just checking;)
     
  6. Nov 24, 2015
    PatC

    PatC New Member

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    Have not had to add water.
    There is an oil build up in the carb if I put the tube on to connect the oil bath and the carb.
    I took the plugs out and cleaned them, they were oily after the initial incident. It was running ok this weekend, except it's still pulling oil from the oil bath.
     
  7. Nov 24, 2015
    PatC

    PatC New Member

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    If it's not connected, it will spray the oil all over the engine compartment from the oil bath.

    That's why I think it has something to do with the whole system. Something I'm overlooking.

    Thanks!
     
  8. Nov 24, 2015
    PatC

    PatC New Member

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    I forgot to mention, it was oil spraying out of the exhaust because my buddies car got an oil bath.

    When I pulled the oil filter this weekend, it had a lot of gas in the oil. So I'm going to do an oil change and make sure it's all clean.

    From what I read, it appears that if the choke is stuck it may allow excess gas in and it will filter down through the engine into the oil. So, that's another issue I may have.

    Of course, they may be related.

    I'm not a mechanic, so this is all new to me.

    Thanks!

    PatC
     
  9. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    I think your fuel pump is leaking (badly) gas into the crankcase. Don't run it anymore until you check that out.
     
  10. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Your description sounds like it is leaking bad enough to vaporize and pressurize the crankcase enough to go through the hose from the dipstick to the air cleaner.
     
  11. Nov 24, 2015
    PatC

    PatC New Member

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    That's something I hadn't thought about. How do I check/test that?

    Thank you!
     
  12. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Remove the fuel pump and you'll probably smell gas at the actuating part where it bolts up to the block. It's almost a guarantee the fuel pump is shot.
     
  13. Nov 24, 2015
    PatC

    PatC New Member

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    I'll check it out and report back. I'll see if I can get photos as I do it so I can share.

    Thanks again!
     
  14. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Did you install a new fuel pump before getting the Jeep running after sitting? If not then since the Jeep sat for a long time the old diaphragm probably got hard and eventually deteriorated and tore once it got used again.
     
  15. Nov 24, 2015
    PatC

    PatC New Member

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    I did not install a new fuel pump. I had the starter rebuilt, tuned it up, etc. Brakes, gas tank.

    Didn't think about the fuel pump.

    Any other things I should be looking for while I'm in there?
     
  16. Nov 24, 2015
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
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    Has your fuel pump got the glass on top or is it a dual vacuum/fuel type pump?
     
  17. Nov 24, 2015
    PatC

    PatC New Member

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    It's a dual vacuum/fuel type I assume. It definitely does not have a glass top.
     
  18. Nov 24, 2015
    WorkInProgress

    WorkInProgress Member

    Kennewick, Wa
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    When my jeep pulled oil bath oil down the carb, my problem was the back of the oil bath assembly had breather holes that were completely clogged with dirt so I had to clean the vent holes and then the inside fake wall of the oil bath also was clogged. Basically I wire brushed the breather holes clean and then ran a long screwdriver up the back wall of the oil bath between the 2 pieces of sheetmetal.

    It took a while to burn out the oil after the clean but then it went away no problems
     
  19. Nov 25, 2015
    mickeykelley

    mickeykelley Well-Known Member

    Republic of Texas
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    How do you clean the metal filter?
     
  20. Nov 25, 2015
    Howard Eisenhauer

    Howard Eisenhauer Super Moderator Staff Member

    Tantallon, Nova...
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    It's detailed in the lubrication section of the factory service manual, also has been discussed once or twice in posts here- a search should produce those.

    H.
     

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