So for the past month or two I have been getting a puttering start up when things used to start up smooth. The check engine light has been on and when I hit around 40 mph it goes away. It started with a slow turn over to a start then I had a fast start later in the day and now a couple days later its not starting at all. Someone said timing belt and if so I'm a real idiot when it comes to cars how to I take the cover off to get to it to check?