This is going to sound pretty stupid, but....the other nght I was reading some of my owner's manual (because I was waiting to pick up my son at karate practice and I had nothing else to read). It stated that you should hold down the accelerator to start it below 0C, and also press it down 3 times first below 0F. It's been starting great wihout that - I thought that you just turned the key
So I tried starting the next morning at 7F by holding down the accelerator. It started so fast it startled me! well, duh!