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81 380 sl, 95 e320
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46 Posts
Discussion Starter · #1 ·
suggestions please....
the engine mixture was adjusted by a pretty competent mechaninic and now it runs rough on start and stumbles and black smoke. it does it also in traffic.
then without warning it clears up.
the grade of fuel may help but not much.
 

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2017 Police Interceptor Utility, 2017 Police Interceptor Sedan
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7,750 Posts
Leaky injectors/injector seals are a suspect.
 
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