I'm new here and I was wondering if anyone could help me. I have a 2006 forenza, and the problem that I am having is that on some days when i go out in the morning to start my car it wont start. It will start up run for a second then shudder and die. It will do it several times before i get it to start and stay running. Then when I start to drive it and shift into gear the car will start to move then it will jerk one time (prety hard) as I'm moving. Has anyone encountered this or have any idea whats causing these problems?