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Old 04-09-2003, 09:53 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,123
Injection pump timing, unbalanced injectors, worn delivery valve seals, lots of other things. Check the Diesel Discussion section archives.

Run a couple of cans of Diesel Purge if you haven't done it in a while.

The MB CD manual is about the only thing you'll find. There's some engine coverage in the Haynes W124 manual but nothing to help you diagnose smoke. I don't know if there is engine coverage in the Ritter or Technibooks volumes on the W124.

91 300SE
87 300SDL
83 300SD
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