Question about 2002 Volkswagen Jetta TDI
I would do an oil change first and double check to make sure the oil is always at top level without over filling it. If the problem persists after that, then check your air filter, fuel filter and spark system.
Black smoke is usually caused by a bad oil seal, clogged air filter or fuel problem.
Posted on Jul 16, 2010
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Posted on Jan 02, 2017
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