When do you know it’s time to tune your truck?

Discussion in 'Experienced Truckers' Advice' started by Gurjap, Sep 24, 2022.

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  1. Gurjap

    Gurjap Light Load Member

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    Hello, I drive a kenworth with a Cummins isx. What are some signs that it needs to be tuned?
     
    Gurjap, Sep 24, 2022
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  2. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

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    ProfessionalNoticer, Sep 24, 2022
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  3. TripleSix

    TripleSix God of Roads

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    What do you mean by “tuned”?

    In the EFI era, TUNED would be done at the ECM, preferably on a dyno. I don’t think that’s what you are preferring to.
     
    TripleSix, Sep 24, 2022
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  4. buzzarddriver

    buzzarddriver Road Train Member

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    When you no longer hear a "B flat" coming out of the stack.
     
    buzzarddriver, Sep 26, 2022
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  5. RockinChair

    RockinChair Road Train Member

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    I was a tuba player in high school, so I would love it if I could get a Bb out of my exhaust - or even better, out of the air horn. But it's a company truck...
     
    Last edited: Sep 26, 2022
    RockinChair, Sep 26, 2022
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  6. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

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    Technically, Bs and Es don't have sharps or flats. Sorry, I had to!
     
    ProfessionalNoticer, Sep 26, 2022
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  7. MartinFromBC

    MartinFromBC Road Train Member

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    You professionally noticed that.
     
    MartinFromBC, Sep 27, 2022
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  8. ProfessionalNoticer

    ProfessionalNoticer Road Train Member

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    I did! It's all in a day's work, my friend.
     
    ProfessionalNoticer, Sep 27, 2022
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  9. AKDoug

    AKDoug Medium Load Member

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    Cummins says 500K between overhead adjustments. I like to do it every 200K and that also gets me a look at overall condition of the top end. There really is no other tune up. Change oil and filters.
     
    AKDoug, Sep 28, 2022
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  10. RockinChair

    RockinChair Road Train Member

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    You mean Bs and Fs, right?
     
    RockinChair, Sep 28, 2022
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