Mercedes slk300 v6 sports. Misfiring

Question

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New coils checked plugs .checked for air leeks and bad conections. Still missfiring on 2 pots don't no wat else it could be.

Answer 1

P0300 Random misifire

P0306 Misfire number 6 cylinder

P0303 Misfire number 3 cylinder

Compression test or better a cylinder leak down test on the suspected cylinder should be done this would rule out a mechanical condition with the engine, make sure the oil level is correct overfilled with motor oil cause misfire conditions