2011 R56 JCW

I've been having a problem which I thought was related to my HPFP which was rebuilt about a year ago (near stalling on start). I sent the pump in because it was under rebuild warranty and I replaced it. The issue continued and I decided it could be a fuel supply problem and I changed out the fuel filter and in tank pump. The issue persisted and all of a sudden I got a P303 warning (Cylinder 3 misfire) - I did not have a warning to this point. I swapped coils and cylinder 3 was still bad. I pulled the plug and found that the center insulator had dropped so I thought that was the source. I installed a new plug and there's no change. I just pulled it and the plug is wet. Is that because the cylinder isn't firing (maybe unspent fuel)?

The engine (short block) was replaced by a mini dealership 15,000 miles ago.

Any thoughts/suggestions on troubleshooting is appreciated.

 

I posted this under 1st Gen, but should have put it in R56. I've copied the thread there.