Question Details

Recently completed a tune-up on a 2003 e320. Engine still misfiring. Traced the problem to one cylinder. It appears that I'm not getting power to the coil pack. Help!

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MercedesMedic  1 year ago

I would check the wire harness.

That would the first think I would check. Or the connector to the ECU may be loose or corroded.

Also is the coil not getting both positive and negative or just one?