[polarbmw]

Friday driving home from work and sudden engine malfunction reduced power message came up on iDrive of 2013 xdrive28i. Engine shaking and could smell gasoline. Limped home and parked. Disconnected battery. Smelled like gas from exhaust. P0304 code misfire cylinder 4. On Saturday, took out spark plug, gasoline on plug, replaced plug and coil. Started car and same issues as above but a lot of white smoke coming from exhaust so I turned off ignition and disconnected battery again. Can you please help me on what else could be the problem?