Today I was going to my girls house. I turned my car on and the car took longer than usual to turn on. Once it cranked it started to studder while making a clicking / ticking sound then I saw white smoke. There was a strong smell of fuel when I stepped outside to see the smoke. Although it was cold outside I never seen that much smoke. What could it be? There was no SES light but I've been having problems with the light coming on. I took it to the deealership and they replaced a O2 sensor but then received another SES light which was cleared and its been a week that it hasn't come on. The only mods are exhaust, intake, HFCls and that's it. Any help or insight will be greatly appreciated. Thanks