N14 problem

Discussion in 'Trucks [ Eighteen Wheelers ]' started by andreevans903, Oct 26, 2016.

  1. andreevans903

    andreevans903 Bobtail Member

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    Every time it starts to cut back onsite give me the message saying the engine fueling is being limited due to lack of oxygen (boost pressure)
     
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  3. ShooterK2

    ShooterK2 Road Train Member

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    There's a screen in the top of the fuel pump, directly in front of where the fuel line exits the solenoid. Try cleaning that screen out.
     
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  4. andreevans903

    andreevans903 Bobtail Member

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    Did that today
     
  5. ShooterK2

    ShooterK2 Road Train Member

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    Hmmmmmmm..... I'm kinda lost on this one. Seems like it would have to be an air restriction somewhere.

    Might try setting your idle high and take a squirt bottle with soapy water and spray all air-to-air fittings and the cooler.
     
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  6. andreevans903

    andreevans903 Bobtail Member

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    Ok thanks I'll try that in the morning oh yeah and I forgot to mention sounds like a clunking noise while under acceleration and especially when it's dying. The sound is like when you spray to much either in a engine that clunking sound
     
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  7. maggard359

    maggard359 Medium Load Member

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    Might unplug your boost sensor and plug it back in, chase the wires to make sure nothing has rubbed it. The sensor has a mechanical side that can stick and give a false reading to ecm. That sensor controls the fueling of the injectors.
     
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  8. andreevans903

    andreevans903 Bobtail Member

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    Where is the boost sensor located
     
  9. ShooterK2

    ShooterK2 Road Train Member

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    Fuel knock. Are you getting black smoke when it is doing this?
     
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  10. andreevans903

    andreevans903 Bobtail Member

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    And how can I tell if the boost sensor is bad and can it be bypassed just to see if that's the problem
     
  11. andreevans903

    andreevans903 Bobtail Member

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    No the insite says that fuel has been derated to prevent black smoke
     
    CellNet Thanks this.
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