I need help. I did a complete spark plug and coil swap on my 2016 m235. Sitting at about 103k miles. This was done in prevent and the car ran perfect prior.

Now, I am having a misfire on cylinder 2 and the idle is atrocious. I have swapped coils, the misfire doesn’t follow. I swapped the new plugs back to old, same cyl 2 code and the idle is even worse.

I truly have no clue what to do at this point and don’t really understand how the car is now running like a bag of shit after it being perfect this morning.

Edit:: I’m now getting multiple misfire codes after putting all old coils and plugs back in. I’m at a total loss.

Please help me figure this out.

  • Spidaaman@alien.topBEnglish
    1·
    10 months ago

    Yeah I would definitely let them know the deal, as much as you know. Did you just not have a PPE done before you bought it?

    • Alternative_Leader91@alien.topOPBEnglish
      1·
      10 months ago

      Will do. Independent, no. (I know, my situation keeps looking worse).

      The dealer I bought it from (non bmw) had it serviced and prepped for sale at a neighboring bmw dealership AND did their own inspection prior to sale, so I didn’t feel the need. Lesson learned on that accord. Not worth the risk of future uncertainty.

      • Spidaaman@alien.topBEnglish
        1·
        10 months ago

        Gotcha. Well hopefully it’s not a big deal, like just needing a new injector. Definitely see if they can help you figure out the tune/DME situation.

        And who knows, you could find a great new Indy shop near your parents for the future.