CODE P0306 NO. 6 CYLINDER MISFIRE

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    • #16047 Reply
      JOHN D STOWE
      Guest

      I HAVE CHANGED OUT THE FUEL INJECTOR, COIL, SPARK PLUG WIRE AND SPARK PLUG. STILL GETTING CODE P0306 ND STILL RUNNING ROUGH. WHAT IS WRONG?

    • #16055 Reply
      Anonymous
      Inactive

      It would help if we knew what make, model, year and engine size. After replacing these parts, the next thing to do is check compression of that cylinder.

      • #16067 Reply
        JOHN D STOWE
        Guest

        2001 CHEVY SUBURBAN 1500 2W WITH 5.3L ENGINE

      • #16772 Reply
        Shane W
        Guest

        It’s probably a lifter.

    • #16068 Reply
      Anonymous
      Inactive

      If the misfire is mostly at idle, check for the intake gasket leaking vacuum. Also check compression on #6.

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