Hi My honda accord has been having problems starting for the past 3 months. Changed out MFRelay Plugs wires and still nothing...tested for spark and that checked out..changed out fuel filter...and it started cranking like it should. only time when it didnt crank is when its super cold outside..it would crank but itll sound like the motors jerking hard..my RPM needle is even erratic while driving and cranking. any idea whats going on?

 

Last time i crunk it smoke..like a little puff shot up from the pass. side of the motor. the ECL came on and stayed on and my Sports light blinks from time to time now.