Hi everyone, newbie 1st post. Just got a 2015, downtown 125i, its been standing for about a year. Changed out the fuel, new battery and plug.its sparking, and fuel coming through injector. I got it started after about 2 hrs of removing plug, emptying chamber etc. Ran well after about 5 minutes of heavy smoking. Starts 1st kick when warm, won't start when cold. So is there a cold start sensor somewhere I can change or some rectifiable issue I don't know about. Any an all help truly appreciated.