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Jeep: Old Jeep - blow by

  1. #1
    Traveling
    Guest

    Old Jeep - blow by

    Have a 91 4 cy wrangler with 218,000 miles. The blow by through the vent
    on top of the valve cover is so forceful that it's soaking the air
    filter with oil so quickly that I need to replace it after just 500
    miles.

    Any quick fixes other than rebuilding/replace the engine?

    Thanks

    Traveling







  2. #2
    Dennis
    Guest

    Re: Old Jeep - blow by

    Drain all of the oil and just drive on. I quarantee there will be no blowby.

    "Traveling" <com> wrote in message
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  3. #3
    Carl
    Guest

    Re: Old Jeep - blow by

    Thicker oil. You can also pull the PCV valve's line back to the air filter
    and just let it vent into a make-shift can.

    Carl

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  4. #4
    TheSnoMan
    Guest

    Re: Old Jeep - blow by

    I agree, try some 15w40 (not 10w40) and that should help some and you
    could try a can of motor honey/STP too. 15w40 will flow okay during
    winter in a worn engine

    Carl wrote: 


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  5. #5
    John
    Guest

    Re: Old Jeep - blow by

    On my 91, here is what I did, went to auto store and got a crankcase filter
    (any one that usually goes through a hole in an air breather housing of an
    older domestic car) I then drilled a hole in the jeeps air breather housing
    below the air cleaner. I inserted the new crankcase filter into the hole and
    reconnected the tube coming from the valve cover to the new filter. I then
    plugged the original hole above the jeeps air filter. The air is still being
    filtered for crankcase ventilation, but below the air filter.

    Try it

    John T




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  6. #6
    Traveling
    Guest

    Re: Old Jeep - blow by

    That sounds like a good idea. Thanks


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  7. #7
    TheSnoMan
    Guest

    Re: Old Jeep - blow by



    Not cool becaue you are send more oil vapor and blown by do intake. You
    need to try heavier oil to "stem the flow" and not increase the venting.

    Traveling wrote: 


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