Spark plug wires just pull off and press back on. Make sure you grasp the wires by the rubber boot only. If you pull the wires by the wires, instead of using the boot, you can break the wires. Remove the plugs with a 3/8" ratchet, extension and a spark plug socket. I do not know if you have to remove anything to get access to the spark plugs and spark plug wires. You may need a universal joint to angle the ratchet.
SOURCE: How do you access the spark plugs 2002 mercury mountaineer
IIRC these are a coil over design. meaning the coil is over the plug. the coil should have one 8mm bolt holding it on the lower intake manifold. remove the coild to get to the spark plugs. look by the fuel injectors, coil should be just next to it or very close. coil usually says motorcraft on it and circle in design.
good luck
Michael
ASE certified
SOURCE: CAN
Remove the spark plugs through the wheel wells. It is easier to do this if you remove the wheel first.
SOURCE: how do you change the spark plugs on a 2003
Reconnect
the air hose to the throttle body and any vacuum lines that were
removed. Replace the plastic engine cover and fasten it in place. That's
it, your done.
SOURCE: do you need to change
Yes they eventually need changed. If you never had a tune up your probably due. Plugs, wires ,cap,rotor,airfilter, and fuel filter. All these affect the performance of the engine. Looses power, and can make it stall or cut out under loads, like when you make hard turns and the power steering pump is putting a load on the engine
SOURCE: need a spark plug wiring
1-3-7-2-6-5-4-8 thats the firing order for your motor http://autorepair.about.com/library/firing_orders/bl-fo-2582.htm
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