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Soot around intake???

Discussion in 'Trucks [ Eighteen Wheelers ]' started by wr2001, Jun 23, 2023.

Page 1 of 2
  1. Jun 23, 2023 #1
    wr2001

    wr2001 Light Load Member

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    Apr 27, 2012
    Las Vegas
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    I have a volvo D12 and have started noticing soot around the intake by the ecm. Is it a leak at the intake or something else? 20230623_120236.jpg
     
    wr2001, Jun 23, 2023
    wr2001, Jun 23, 2023
    #1
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  3. Jun 23, 2023 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    I would think an EGR leak.
     
    Big Road Skateboard, Jun 23, 2023
    Big Road Skateboard, Jun 23, 2023
    #2
    RockinChair Thanks this.
  4. Jun 23, 2023 #3
    wr2001

    wr2001 Light Load Member

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    Apr 27, 2012
    Las Vegas
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    EGR's are on exhaust side, right side. Intake is on left.
     
    wr2001, Jun 23, 2023
    wr2001, Jun 23, 2023
    #3
  5. Jun 23, 2023 #4
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    OK
     
    Big Road Skateboard, Jun 23, 2023
    Big Road Skateboard, Jun 23, 2023
    #4
  7. Jun 23, 2023 #5
    RockinChair

    RockinChair Road Train Member

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    Where does the EGR feed into the intake?
     
    RockinChair, Jun 23, 2023
    RockinChair, Jun 23, 2023
    #5
  8. Jun 23, 2023 #6
    wr2001

    wr2001 Light Load Member

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    Apr 27, 2012
    Las Vegas
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    It doesn't. Feed is from CAC into intake. I'm just wondering if too much exhaust is getting into CAC...after just replacing turbo.
     
    wr2001, Jun 23, 2023
    wr2001, Jun 23, 2023
    #6
  9. Jun 23, 2023 #7
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    How does exhaust get into the intake?
     
    Big Road Skateboard, Jun 23, 2023
    Big Road Skateboard, Jun 23, 2023
    #7
    D.Tibbitt, RockinChair and wore out Thank this.
  10. Jun 23, 2023 #8
    wr2001

    wr2001 Light Load Member

    88
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    Apr 27, 2012
    Las Vegas
    0
    I'm guessing it happens when turbine/bearing on turbo goes bad. The CAC is connected to EGR cooler. Maybe it's clogged and backfeeding. I'm here for answers not more questions :rolleyes:
     
    wr2001, Jun 23, 2023
    wr2001, Jun 23, 2023
    #8
  11. Jun 23, 2023 #9
    JB7

    JB7 Heavy Load Member

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    Dec 13, 2022
    Laurel, MD
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    EGR stands for Exhaust Gas Recirculation. Puts exhaust gas into the intake air to reduce nitrous oxide (NOx) when the air/fuel mixture ignites. Same on a gasoline engine in a car.
     
    JB7, Jun 23, 2023
    JB7, Jun 23, 2023
    #9
    RockinChair Thanks this.
  12. Jun 23, 2023 #10
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    Thanks guys. Learnin Knew stuff every day
     
    Big Road Skateboard, Jun 23, 2023
    Big Road Skateboard, Jun 23, 2023
    #10
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