Why my car spewing start in the morning

Could be any number of things that can cause a rich running problem when cold. My first thought it could be a malfuntioning tempuature sensor but I do see a TSB BMW has published a TSB that sounds simular to the symtoms you have. CAUSE Possible cause: high pressure injector failure (leakage or incorrect spraying pattern), due to internal wear or unfavorable stack of tolerances. The TSB # should want to look it up is..... SI B 13 04 09