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2 Answers
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stuartjakl 1/19/2013Replace the plugs with plugs bought from Mercedes. Do not use resistor type. Make sure they are gapped correctly (the dealership can verify the gap for you). Try again. -
stuartjakl 1/19/2013Replace the plugs with plugs bought from Mercedes. Do not use resistor type. Make sure they are gapped correctly (the dealership can verify the gap for you). Try again.