Two days ago i put some gas in my baby when me and my girl were riding around then when i went to start her up, she dumped a shitton of white smoke, ran just a little bit rough for about 20 seconds then it ran just fine. She did that to me about the next three times i started her, but I drove her around all day today and yesterday and she didn't do it once she was just fine? From my experience problems dont typically fix themselves, so im lost