Hi guys needing some help I've got a focus 53 plate it's been running a bit poorly the engine management light came on when I went to the shop (2min drive) as I was on the way back the eml was flashing. I got my code reader out it had 2 codes one was not applicable so I don't know and the other was miss fire. So I've changed the following: Coil pack, ht leads, and spark plugs. But now runs really bad nearly cutting out. Has anyone got any ideas at all I'm thinking injector or lambda sensor. Any ideas would be a big help cheers mark.