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  #1  
Old 07-05-2016, 05:50 PM
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Injector line wear, OM606.910

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

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)
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  #2  
Old 07-05-2016, 05:58 PM
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are the line holding clamps missing on your engine?
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Old 07-05-2016, 06:56 PM
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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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  #4  
Old 07-05-2016, 10:08 PM
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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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  #5  
Old 07-05-2016, 11:50 PM
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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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  #6  
Old 07-06-2016, 01:40 AM
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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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Our all-biodiesel family
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  #7  
Old 07-06-2016, 06:03 AM
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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.
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1996 Mercedes S124 E300TD - 129k - rolling restoration project -

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