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Thread: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

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    Thuggins's Avatar

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    2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    Hey guys, I was changing my oil and noticed it smelled like diesel.

    It was intense, and my oil was black coal.

    The strength of the smell makes me wonder if I should have the injectors looked at.

    I have the CP3 as well.

    Any input would be significant.


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    2020 Ram 2500 6.7L Night edition

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    I WILL STAND! AK Bob's Avatar

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    Re: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    You may have a cracked injector body.

    If this is the case you should see a clean area in the valve train.

    Pull the valve cover and run the engine to check for leaks.

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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    Thuggins's Avatar

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    Re: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    I will look into this; I imagine that would be the best-case scenario, LOL.


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    2020 Ram 2500 6.7L Night edition

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    I WILL STAND! AK Bob's Avatar

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    Re: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    Quote Originally Posted by Thuggins View Post
    I will look into this; I imagine that would be the best-case scenario, LOL.

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    If it’s a small leak, you may need to increase the rail pressure while idling the engine to find it.

    This can be done with a scan tool or by disconnecting the FCA plug at the CP3 pump for a few seconds.

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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    I WILL STAND! AK Bob's Avatar

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    Re: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    I assume the oil level is rising, and the engine runs smoothly without any smoke out of the exhaust.

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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    Thuggins's Avatar

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    Re: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    Quote Originally Posted by AK Bob View Post
    I assume the oil level is rising, and the engine runs smoothly without any smoke out of the exhaust.
    I will begin oil level monitoring today; the truck runs smoothly with zero smoke.

    I will also check the injectors on Saturday.


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    2020 Ram 2500 6.7L Night edition

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    I WILL STAND! AK Bob's Avatar

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    Re: 2020 RAM 2500 - Oil Smells With Strong Diesel Fuel Smell?

    Quote Originally Posted by Thuggins View Post
    I will begin oil level monitoring today; the truck runs smoothly with zero smoke.

    I will also check the injectors on Saturday.

    Sent from my iPhone using Tapatalk
    That sounds like a good plan; if you do have a fuel leak in the valve train area, it can lead to worn cylinder walls over time.

    Perform an excellent visual check, looking for a clean area.

    Wear eye protection and thick gloves to protect against any high-pressure spray that could happen, significantly when increasing the fuel rail pressure while idling.

    A diesel fuel UV dye can be added to check with a black light to find tiny leaks.

    2014 RAM 3500 (Aisin) 3.73 4X4 Limited Crew Cab Long Bed DRW. Oil Bypass Filter, Fuel Filtration Kit, Cold Air Intake, City Diesel Actuator and 50 Gallon Aux Fuel Tank.

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