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  1. #1
    Junior Member
    Join Date
    Jun 2016
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    10

    e39 Misfire

    Hi Guys,

    Had an ongoing issue with the CEL coming on from time to time and a slight engine shaking. This would normally disappear almost immediately. Ran a diagnostic and the scanner told me there was a misfire in CYL5.

    On Friday evening I replaced CYL 5 and 6 with new (second hand) coils that came from a working engine with no misfires and also changed all 6 spark plugs. I changed 5 because it was a cheap brand and i got two matching bremi coils. The other 4 coils are also bremi.

    Friday eve and all day sat car ran better than ever. Today the CEL is permantly on and the vibration is stronger than ever, ran a diagnostic and it says the following: (have also attached a pic of the spark plug from cyl5, no oil or water, just a small bit of carbon build up..

    Any ideas?
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