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Can a truck have blow by but not use oil

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by ready2truck, Mar 20, 2021.

  1. Mar 20, 2021 #1
    ready2truck

    ready2truck Medium Load Member

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    C15 acert about 200k on gold unframe. Slight smoke coming from crankcase tube. Doesn't seem to happen all the time. Just went 10k and didn't use a drop of oil.
     
    ready2truck, Mar 20, 2021
    ready2truck, Mar 20, 2021
    #1
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  3. Mar 20, 2021 #2
    Roberts450

    Roberts450 Road Train Member

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    All diesel engines have blow by even straight from the factory. Blow by comes from the fact that the rings aren’t pushed up against the liners from the added combustion pressure from the air forced in by the turbo and thats why blow by is measured with a load on the engine.
     
    Roberts450, Mar 20, 2021
    Roberts450, Mar 20, 2021
    #2
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  4. Mar 20, 2021 #3
    dirthaller

    dirthaller Heavy Load Member

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    Yes. I had a 2007 W900 with an ACERT that had more crap coming out the blowby tube than the smoke stack. Sold it in December 2013 with over 800k on the clock on the original engine and it NEVER burned a thimble full of oil. Almost 19,000 hours.
     
    dirthaller, Mar 20, 2021
    dirthaller, Mar 20, 2021
    #3
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  5. Mar 20, 2021 #4
    dirthaller

    dirthaller Heavy Load Member

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    ACERTS are famous for blowby anyway especially if they used original compression ratio pistons (usually 18:1) when they overhauled it.
     
    dirthaller, Mar 20, 2021
    dirthaller, Mar 20, 2021
    #4
    Dino soar, Rideandrepair and ready2truck Thank this.
  7. Mar 21, 2021 #5
    ready2truck

    ready2truck Medium Load Member

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    What software do I need to change settings in the ecm and to change tunes?
     
    ready2truck, Mar 21, 2021
    ready2truck, Mar 21, 2021
    #5
  8. Mar 21, 2021 #6
    lester

    lester Midwest's #1 Feed Hauler

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    lester, Mar 21, 2021
    lester, Mar 21, 2021
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