Ok 007bimmer,
I checked around and asked the question about your car. The responce I got was "Check for water in the spark plug cylinders by removing each of the ignition coils. As well, it's possible one of the coils shorted out to the point of failure and might need replacing.
I have not only water in the spark plug cylinders, but in the engine oil, and one burnt out ignition coil.
I hope this helps.
Skycity_BMW