Focus Fanatics Forum banner

engine misfire

  1. New Members Check In!
    So my focus popped up 3 codes to be specific PO300- multiple cylinder misfire PO302- cylinder 2 misfire PO316- engine misfire on startup first 1000 rev I originally thought it was my spark plugs which helped but didn’t stop it. What do you guys think and do you think I have to take it in or can...