Bad engine oil leak! - Dodge Cummins Diesel Forum
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post #1 of 9 (permalink) Old 10-19-2019, 01:34 PM Thread Starter
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Bad engine oil leak!

Seems to be a steady stream coming out somewhere around/behind the engine mount on the drivers side of the engine.

Any idea where that would be coming from? What is in that area that would leak that bad. Seemed to start all of a sudden. I did just have the transmission cooler lines replaced a short time ago, so maybe they knocked something loose.

Appreciate any help.

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post #2 of 9 (permalink) Old 10-19-2019, 11:24 PM
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The turbo drain is over there. It drops back into the block thru a dedicated port just above the where the pan meets the block in the vicinity of the engine mount IIRC. Might be the turbo drain got knocked loose. That end is a press-fit with an o-ring I believe, so itís entirely possible if someone was working in that area they couldíve knocked it loose and not realized it.

Hope this helps.


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post #3 of 9 (permalink) Old 10-19-2019, 11:45 PM
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Uh, on my 07' 5.9 the turbo is on the passenger side.

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post #4 of 9 (permalink) Old 10-19-2019, 11:56 PM Thread Starter
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Thanks guys.

Yes, my issue is on the driverís side. I believe there is a drain from the valve cover to an area behind the ECM, so it could be that. There also appears to be a sending unit of some kind in the block behind the fuel filter, so that could also be it. Does anyone know what that is for?

Those are the only 2 spots that I have found through YouTube videos and diagrams that look like they could be the culprits. The older Cummins had a tappet cover in the side of the block, but I think thatís no longer there on the common rail.

Anyone ever have an oil leak issues with either of those?
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post #5 of 9 (permalink) Old 10-20-2019, 01:02 PM
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Sorry; brain fart. I got the Reft and Light cornfuzzed.

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post #6 of 9 (permalink) Old 10-20-2019, 05:12 PM
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Oil pressure switch is on that side, just in front of oem fuel filter canister, also there are some plugs in main oil galley that are for other platforms. Best picture I have is on pg 12 here https://www.painlessperformance.com/Manuals/60250.pdf
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post #7 of 9 (permalink) Old 10-21-2019, 12:26 PM Thread Starter
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Quote:
Originally Posted by rghavana View Post
Oil pressure switch is on that side, just in front of oem fuel filter canister, also there are some plugs in main oil galley that are for other platforms. Best picture I have is on pg 12 here https://www.painlessperformance.com/Manuals/60250.pdf
That helps a lot. Thanks!
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post #8 of 9 (permalink) Old 10-21-2019, 09:58 PM
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Quote:
Originally Posted by rghavana View Post
Oil pressure switch is on that side, just in front of oem fuel filter canister, also there are some plugs in main oil galley that are for other platforms. Best picture I have is on pg 12 here https://www.painlessperformance.com/Manuals/60250.pdf
Handy little guide!
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post #9 of 9 (permalink) Old 10-23-2019, 01:23 PM Thread Starter
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Just to close this out - it was the oil pressure sending unit near the fuel filter. There was a steady stream of oil coming out in the event it happens to anyone else.
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