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OM642 Fuel leak near fuel filter

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Old Dec 10, 2021 | 02:13 PM
  #1  
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2013 ML 350 Bluetec
Unhappy OM642 Fuel leak near fuel filter

Went to start the car this morning and it would crank, but no start. I noticed diesel smell and a puddle forming under the car. Popped the engine cover off and it was pretty obvious what was wrong


Zoomed out view

Close up view. This is what popped out

I did a quick search, but didn't find anything. Is this a common problem? I reattached it, put the clip back in place, and tied a string around the clip so that hopefully if this happens again I don't lose the clip.

Thank you!
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Old Dec 10, 2021 | 10:38 PM
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1922 Ford Model T / no OBD
No, wiring fuel lines is not a common problem. Most of owners use original parts.
There is at Tee somewhere on the line originally and you need to restore it to original parts.
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Old Dec 11, 2021 | 10:05 AM
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2013 ML 350 Bluetec
Originally Posted by kajtek1
No, wiring fuel lines is not a common problem. Most of owners use original parts.
There is at Tee somewhere on the line originally and you need to restore it to original parts.
Thank you for the reply @kajtek1 . These are all OEM parts. The plastic T fitting the red arrow points to is the one that popped out. I added the red string to the metal clip that retains the T fitting. Hoping that if it pops out again that the string makes the metal clip easier to find because without it we're stranded. I'm wondering if this T fitting popping out is a known issue.

Thank you
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Old Dec 11, 2021 | 10:17 AM
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1922 Ford Model T / no OBD
You picture is not showing the whole Tee, but it happen to me on newly purchased car that the end with oring pop-out from the fitting. Inspection show that mechanic (auto was serviced at dealer only by PO) bend holding clip to save 2 minutes of creating proper access to it.
So yes, lousy mechanics are common issue.
It is safety issue as well. In my case the fuel line disconnected at 75 mph, creating huge cloud behind. I lucked with no fire, but fuel spilling on hot exhaust is safety issue.
On my 2009 model the fitting was metal.

Last edited by kajtek1; Dec 11, 2021 at 10:23 AM.
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Old Dec 11, 2021 | 10:26 AM
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@kajtek1 well that's scary! Glad you're ok!

Just had the car serviced at a dealership in August and maybe they bent the clip too. I'll try to get a new one and replace it. Thank you!
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Old Dec 16, 2021 | 05:48 PM
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For others I ordered 001-991-58-70. It has the same physical dimensions but felt much stiffer.
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