Quote:
Originally Posted by MteK
Still, what's the lifespan of a BMW Coil?!
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I think I saw in a Cobb video that they said its around 60K to 80K. I find that hard to believe at first, but our cars do go thru coils - you can see that by reading posts on our forum.
I think around that mileage it would be wise to change all the coils. Maybe do it with new spark plugs too.
At that mileage the injectors could be bad too. But generally you should change a coil first (or move it) and then an injector for that cylinder. Most opt for moving them first.
Carbon buildup could also cause a misfire too.