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you will need a 5/8 size spark plug socket, with a 3/8" ratchet, and a 4 - 6" extenstion to remove the plugs, and the wires can be pulled off at the spark plug boot, just twist the boot back and forth a little, and then pull them off, sometimes you will need a spark plug wire boot puller, this is very inexpensive, and can be purchased at a auto part store, replace only 1 spark plug and wire at a time, this way you wont get the wires mixed up. also it is recommendable since escorts have alluminum heads to replace the plugs when the engine is cold.
NORTHSTAR 4.6 ENGINE REMOVE INTAKE MANIFOLD SERVICE COVER FROM THE ENGINE.SPARK PLUGS IN THE VALVE COVER BUT THE SPARK PLUGS NOT HARD TO CHANGE.YOU NEED A LONGER SPARK PLUG SOCKET OR YOU USE REGULAR SIZE PLUG SOCKET USING LONGER EXTENSIONS.YOU NEED SPARK PLUG BOOT PULLER.YOU NEED A UNIVERSAL JOINT.BESURE TO GET PIECE RUBBER HOSE 10 INCHES OR WHAT EVER SIZE PLACE HOSE OVER SPARK PLUGS FOR THE HARD TO REACH SPOTS TO HELP AID SPARK PLUG BACK IN WITHOUT STRIPPING THE THREADS.HOPE THIS HELP.
there are 4 large wires at the front of the engine on the cylinder head, carefully remove them by twisting the rubber boots back and forth until they come off, under those are the spark plugs, u will need a 3/8" ratchet and a short socket extension with a 5/8" spark plug socket on it, put the socket over the plugs and remove them reinstall in reverse order, 10 minute job on an escort.
u need a spark plug socket & wrench and replace the leads one at a time be sure not to mix them up gently pull the leads from the rubber ends and when replacing the leads push them on till you hear a little click