Flashing Service Engine light.
I was driving when all if a sudden it started idleling rough and flashing Service.
So I read its misfiring and the most common issues are bad coils or spark wires. I went n bought both new,motorcraft, and the rough jolting diminished but its still there. I now read it could be the spark plugs or fuel injector. What do you guys think before I take it to a shop?