Im having a hard time with pulling out the spark plugs on my 2006 Mountineer

Don't know which engine is under hood!

if it's a 4.6L,then it takes a 9/16 socket. Spark plugs are torqued to the proper specification. Spark plugs- SP-546 and SP-547 require properly torqued to 30-38Nm (22 to 28 Ft. lbs.) with a dedicated 9/16” spark plug socket; Gap: .045; w/ Black Coil Boots.