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Thread: Misfire Cylinder #3

  1. #1
    Join Date
    Mar 2018
    Location
    Chicago
    Posts
    2
    My Cars
    2011 BMW 328Xi

    Misfire Cylinder #3

    2-3 days back while driving, dashboard displayed check engine light for 2 seconds and then it went off. When I got the vehicle inspection done by the BMW dealer they told me that Cylinder #3 misfired and I need to replace all the spark plugs and ignition coil. Do I have to replace all the spark plug? If so any good Mechanic shop in Chicago? and how much should be the price for that?

  2. #2
    Join Date
    Dec 2013
    Location
    Chicagoland area
    Posts
    4,372
    My Cars
    EXOTICS
    We can take care of this for much less than the dealership,
    That I can guarantee! PM me with what part of the city you're located at.

  3. #3
    Join Date
    Mar 2018
    Location
    Chicago
    Posts
    2
    My Cars
    2011 BMW 328Xi
    I stay near UIC. quite close to downtown

  4. #4
    Join Date
    Dec 2013
    Location
    Chicagoland area
    Posts
    4,372
    My Cars
    EXOTICS
    Did you ever receive my PM?

  5. #5
    Join Date
    May 2006
    Location
    Fort Collins, Colorado
    Posts
    1,092
    My Cars
    2008 328xi Sportwagon
    Could be plug, could be coil. Try swapping #3 coil to another cylinder and if the miss returns, see if it moved with the coil. If so, replace coil. If not, replace plug.

    I suggest you mention mileage when asking for help, too. (Most times this happens at 60-70K miles or more.) I'd replace all plugs if one is bad, since they don't cost that much to DIY, but I might do coils individually.

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