Hi folks,

Having owned many MB diesel variants, this took me by surprise especially given the history and mileage of the car 126k miles.

I suspect failed engine mounts which is also on the 'to do'list.

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David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)

are the line holding clamps missing on your engine?

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

I guess amount of wear is determined by how hard they are rubbing against each other. I've seen the same thing to a lessor extent. It is important to keep all those clamps in place.

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Jim

Zip tying the lines together is bad juju.

There is 3000 psi in the lines and every time the injection event occurs, the line vibrates and elongates. If the lines are not properly supported and isolated from one another by the factory clips and spacers, this is what happens in short order.

If you have a cdi engine the rail pressure is 10 x this or close to 30,000 psi.

In fact there are devices that exploit this effect to perform an injection timing check.

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The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

Even with all the clips in place on my '99 I had the same wear pattern. I simply bent the tubes apart and watched them to make certain that they didn't rub again.

Move apart, keep apart and watch carefully. I was OK you should be to.

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250

My '87 300D Turbo had the same problem because the lines weren't supported correctly. I bought all the right clips and clamps and fixed the problem.

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"Buster" in the '95

Our all-Diesel family
1996 E300D (W210) . .338,000 miles Wife's car
2005 E320 CDI . . 113,000 miles My car
Santa Rosa population 176,762 (2022)
Total. . . . . . . . . . . . 627,762
"Oh lord won't you buy me a Mercedes Benz."
-- Janis Joplin, October 1, 1970

Yup, agree correct bracketing is crucial.

I think all the clips were in place and not broken but may not have been pushed home to get that 'click'.

This was a restoration project which from my overall assessment has been neglected over the years. The good news most of the major stuff is done leaving important but fiddly bits such as this.

__________________
David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)