Cummins Marine Diesel Repower Specialists › Forums › Cummins Marine Engines › 480 QSB 6.7 High Crankcase Pressure

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  • August 19, 2019 at 4:02 pm #77031

    George
    Participant
    Vessel Name: Dosn't Suck
    Engines: 380 Cummins
    Location: Stewart Florida
    Country: United States

    2013 Meridian 441, Cummins 480 QSB 6.7, 350 hours
    High Crankcase alarm
    Technician diagnosed and concluded turbo charger fault.
    recommended having both turbos rebuilt.
    no improvement HIGH CRANKCASE PRESSURE?
    any leads appriciated

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  • August 20, 2019 at 8:15 am #77049

    Corey Schmidt
    Forum Moderator
    Vessel Name: Rebel Belle
    Engines: Cummins
    Location: Oxnard, CA
    Country: USA

    I can only help you if you provide me the exact Cummins fault code number. I have seen the sensor go out on these engines before but it could also be something else… a fault code will help direct us initially.

    https://www.sbmar.com/wp-content/uploads/2015/12/cummins-marine-qsb-6.7-crankcase-pressure-sensor-location.png

    August 20, 2019 at 5:10 am #77046

    George
    Participant
    Vessel Name: Dosn't Suck
    Engines: 380 Cummins
    Location: Stewart Florida
    Country: United States

    Fault only is high crankcase pressure

    Fault only is high crankcase pressure

    August 19, 2019 at 8:27 pm #77037

    Corey Schmidt
    Forum Moderator
    Vessel Name: Rebel Belle
    Engines: Cummins
    Location: Oxnard, CA
    Country: USA

    What EXACT faults are you seeing on the instrumentation?

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