New to me, bought an X6M 2010 (S63 original engine, ie not TU), swapped out the original plugs (Bosch, M branded!) for the NGK version thats one range cooler (as recommended practice for the S63).
When removing the original plugs all looked fine bar one, it was black and sooty.
Now the same cylinder (6) is black and sooty and I can feel a misfire plus OBD picks up one on Cylinder 6. Car now in limp mode and CEL on. Since I swapped out the Coil already (no difference) I assume this is a bad Fuel Injector? Its running Index 7 all round. Any thoughts?