i have a 2011 2.4 and the first start up after sitting all night or long period of time during the day it will start and idle rough for a few seconds, the exhaust smells rich and one time at 0* it threw some smoke. after its started it runs fine and will start normal after that. the only youtube vid i found that sounded the same was a 2010 malibu that had a high alcohol content, and all it needed was an update, anyone else have the same issue?

 

 

Does this happen with key start, or only remote start?

 

no check engine light
and no remote start its a five speed