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88 cat 3406 blow by

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by cptmiker, Feb 28, 2024.

  1. Feb 28, 2024 #1
    cptmiker

    cptmiker Bobtail Member

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    Feb 28, 2024
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    Hello all new here and no too familiar with these big motors. CAT 3406 333 hp
    I have a older 1988 freightliner with 78k miles on it. It has been parked for a few years. Started right up a few days ago but I notices quite a bit of smoke coming from the Oil dip stick and the oil fill tube ran it for about 45min and no changes. I am assuming or hoping that this will settle down or go away if I drive the truck for about 50 miles or so. I find it hard to believe that the rings or the sleeve could be bad with only 74k miles on it.
     
    cptmiker, Feb 28, 2024
    cptmiker, Feb 28, 2024
    #1
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  3. Feb 28, 2024 #2
    Magoo1968

    Magoo1968 Road Train Member

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    3000 miles a year seems legit .. If it actually is that low of mileage cylinders can be rusty or rings stuck. Not to mention seals and guides . Sitting is the worse thing for a engine. Everything dries and cracks. All you can do it run it and change oil asap after getting hot it may smoke less.
     
    Magoo1968, Feb 28, 2024
    Magoo1968, Feb 28, 2024
    #2
    drh72, beastr123 and Jordonh Thank this.
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