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C250 Turbo diesel heavy black smoke and bad running

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Old Dec 21, 2011 | 11:25 PM
  #1  
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C250 turbo diesel 1998
Unhappy C250 Turbo diesel heavy black smoke and bad running

Hi all
Not sure if anyone can help I had a leak from one of the pressure valves on my fuel injector pump after spending a couple of days locating the tool to take it of changed the the rubber and copper seals on all five valves ever since then the car has been running badly and heavy black smoke has been poring out the exhaust. I have had them of and on replacing valve housings and seals every time with little or no effect. The bosch inline pump is meant to be bullet proof and I can't see how I have damaged it by doing what I have done. I have spoken to mercedes - as I have ben there several time now and they say that i can't do any damage to the pump. I have listed some of the things I have tried;

1. Change all seals torque setting to 26lbft
2. Bled pipes up to injectors while running
3. Progressively torque down valves.
4. checked all valves while running to see if they are injecting on a regular bases.


The car was running fine before I have changed the pr-filter and main fuel filter + rocker cover seal and oil filter I can't see how I have effected any other part of the car. On the second attempt I have left the inlet manifold off don't think that would make any difference to the basic running.

I would take it to the garage but can't as it is running and smoking so bad I don't think I would make to the end of the street without being stopped.

Hope someone can help and apologies for going on so much.

Steve
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Old Dec 27, 2011 | 02:57 AM
  #2  
Ausmbtech's Avatar
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From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
Is it lacking power too or does it have normal power?
Does it smoke at idle or just under acceleration?
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Old Dec 27, 2011 | 07:03 AM
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C250 turbo diesel 1998
have not taken it for a spin yet.

it smokes at idle and when you rev it up
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