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Old 07-06-1999, 08:28 AM
Mustafa Ahmed
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I have a 1987 300 SDL Turbo and seem to be experiencing a loss of power. In addition to this, the exhaust emits a tremendous amount of black smoke. So much in fact that the rear bumper and the trunk above the exhaust pipes is covered in black soot. The turbo has been replaced once already. A couple of years ago, Mercedes made a change in the exhaust/turbo system. They removed the trap oxidizer and essentially put in a straight pipe. Do you think I need to replace the turbocharger. If so, what could be wrong with the turbo? Could there be something else wrong with the car? Is there a reputable place you recommend that could rebuild the turbo for me?

Mustafa Ahmed
Old 07-06-1999, 08:56 PM
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Join Date: Mar 1999
Location: Suwanee, GA, USA
Posts: 4,712
The first thing to be done is to have the fuel system checked out by a qualified tech. There are many possibilities of what can be wrong. I would advise you not to jump to any conclusions about the turbo.


Old 07-07-1999, 12:52 AM
Join Date: Jun 1999
Location: Quezon City, Philippines
Posts: 79
Try checking your air filter first, then have a mechanic measure your turbo boost pressure at high load & speed.

Smoke could clear out with a new air filter.

If your boost pressure conforms to MB specs, then your turbo is okay.

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