I recently just got a honda civic del sol. It was working fine when I bought it and everything. But the other morning I was having a hard time starting it up. Also, when I get to a certain speed it starts to stutter until I let go of the gas again it and push it back down it will be fine. THen the other night I was getting up to speed , it started to stutter then it shut off on me. Any help? Could this just be like the fuel filter or what?