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.

  • Alternative_Leader91OPBEnglish
    1·
    10 months ago

    As much as I hate to even spit these words, I bought it tuned and am unable to gain control of the license or even confirm what tune it’s on.

    My plan was to buy an MHD or bm3 license but haven’t gotten around to it. I’m getting p0302 which is just reading cylinder 2. P0300 has popped up too(multiple cylinder misfires)

    I want to lead towards a faulty injector at this point, but I really don’t know. Here’s the biggest kicker - I’m 500 miles from my house, at my parents.