DD15 Cylinder Liner/Head/Piston/Rocker ???

Discussion in 'Trucks [ Eighteen Wheelers ]' started by DriverHaze, Dec 28, 2025.

  1. DriverHaze

    DriverHaze Bobtail Member

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    Did a Cylinder cutout test and cylinder 5 is bad. I'm going to finish driving for the week, parked the truck for a while and talk to a diesel mechanic about a overhaul .

    Thanks for the advice guys.
     
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  3. Big Road Skateboard

    Big Road Skateboard Road Train Member

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    A cutout didn't tell you cylinder 5 is bad, just that your issue is with cylinder 5.

    Exactly what happened when you cut out cylinder 5? Lose the noise or smoke?
     
    Oxbow and 062 Thank this.
  4. DriverHaze

    DriverHaze Bobtail Member

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    Apr 7, 2025
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    Both
     
    Oxbow Thanks this.
  5. MTMAUS

    MTMAUS Light Load Member

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    What's PAI kits like for a dd15? Any good?
     
  6. Antinomian

    Antinomian Road Train Member

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    Use the Relative Compression Test. The Mechanical Compression Test is way more involved.
     
    KDHCryo Thanks this.
  7. Antinomian

    Antinomian Road Train Member

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    I've seen YouTube videos of their liners failing. I wouldn't chance it.
     
  8. KDHCryo

    KDHCryo Medium Load Member

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