Ford Fusion Spark Plugs Problems

car has had new coil pack, new spark plugs and new ht leads, but is still misfiring on the 1-4 plugs, can anyone help or is it to be a trip to the gagarge?

Car won't start when cold but fine when it's warmed up, we've had the temperature sensor changed but still does it the car itself says it's at running temperature no matter what the temperature actually is any advice?