Ecodiesel main bearing failure cause ??

Ecodiesel main bearing failure cause ??

This is a discussion on Ecodiesel main bearing failure cause ?? within the RAM 1500 Diesel Mechanical forums, part of the RAM 1500 Diesel Garage - RAM 1500 Diesel Mechanics Corner category; Anybody ever get good information regarding the Ecodiesel main bearing failure ?? I'm curious as to what is causing this to happen ? I have ...

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    RAM Sr Member Jinx's Avatar
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    Ecodiesel main bearing failure cause ??

    Anybody ever get good information regarding the Ecodiesel main bearing failure ?? I'm curious as to what is causing this to happen ? I have read plenty of theories I'm starting to think these engines are experiencing bearing creep an issue where the bearing starts to rotate gradually until the oil feed hole is going out of register and the bearing is starved of oil. FCA is seems to be secretive about this just replacing the engine with no diagnosis feed back. It's impossible to actually point to any definite cause without oil testing and actually examining bearings from the failed engine. Does anybody happen to know if the part number from the rod and main bearings has changed over the years ? Thanks for any info and thoughts
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    RAM Guru Ram1's Avatar
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    This has been discussed over and over to no avail. No info has been released on what is actually causing the problems. Part numbers might give a clue but wouldn't be proof of the cause of failures. Spun bearings has been one of the theories from the beginning......
    Do not rule out working with your hands, but it does not preclude using your head.

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    RAM Bronze Member Haul N Grass's Avatar
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    The crankshaft bearings are lubricated thru the Internal of the crankshaft, When bearings spin it’s due to lack of lubrication ...
    Last edited by Haul N Grass; 04-23-2019 at 04:40 AM.
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    RAM Guru Ram1's Avatar
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    Quote Originally Posted by Haul N Grass View Post
    The crankshaft bearings are lubricated thru the Internal of the crankshaft, When bearings spin it’s due to lack of lubrication ...
    That's true but could also be caused by improper machining.
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    Do not rule out working with your hands, but it does not preclude using your head.

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    RAM Jr Member Sparks1013's Avatar
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    I'm still going with fuel dilution in the engine oil. Caused by frequent regen cycles combined with short trips not allowing the engine oil to reach a high enough temp to burn the fuel.
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    RAM Sr Member Jinx's Avatar
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    Quote Originally Posted by Sparks1013 View Post
    I'm still going with fuel dilution in the engine oil. Caused by frequent regen cycles combined with short trips not allowing the engine oil to reach a high enough temp to burn the fuel.
    oil analysis would help but the change oil message is supposed to be activated if the fuel level hits 2% and 2% is not considered terribly serious as I understand this. Oil analysis would also be good because I think it might be a good idea to eliminate anti-freeze contamination which should show up on your oil analysis as High Sodium. I was fleet manager for several trucking companies when we got oil sample alerts for High Sodium it was pretty much guaranteed the EGR cooler was leaking, I returned the original Cummins EGR coolers for warranty practically by the fork lift skid.
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    Administrator 97hmcs's Avatar
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    I'm going with we just don't know, but wish we did.
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    FCA doesn't want to tell no one nothing. They don't care once the money is in the bag.
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    RAM Bronze Member Bounty Hunter's Avatar
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    Quote Originally Posted by Sparks1013 View Post
    I'm still going with fuel dilution in the engine oil. Caused by frequent regen cycles combined with short trips not allowing the engine oil to reach a high enough temp to burn the fuel.
    Still not supported by oil analysis nor reported driving habits of owners.
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    Sorry, but how is the OLM supposed to determine fuel dilution? I read a pile of the tests posted on this forum with emissions intact vehicles. Fuel and soot are quite low, nothing to back up the claim. I wonder if the bearing clearances/surface area were just not conducive to using a 30 weight, hence the switch to 40 but again, some people were posting tests on the 30 with good numbers. As well diesel oil does not really evaporate off like distillates so it hangs around much longer.
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