My 2007 Ford Focus SE has been having an issue where it doesn't start up all the time. Sometimes it takes 3-4 tries to get it started. All the electrical comes on but it just won't turn over. I only seems to happen once every few days. After taking it to the repair shop they said when they hooked it up to the computer and it gave a code that the fuel regulator was bad. They cleaned it and it seemed to work for a few days, but ultimately it had the same problem again. Any kind of help would be greatly appreciated.