Can you help my mechanic fix my Focus?
Hi, my mechanic has put a new (well second hand 2007) engine into my 2006 Ford Focus but it's misfiring on one of the cylinders. He tried replacing the coil, discovered that's not the issue and is now in the process of changing out various sensors, but nothing has worked so far. He says there's not a problem with the new engine and is running out of ideas. Would you have any suggestions?
