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Believe it or not, the easiest way is: 1. Remove the plug wire by pulling it off carefully, grasp it close to the end. You can also buy a plug wire remover which is available at any parts store. 2. Using a SPARK PLUG wrench (available at any parts store) - remove the old plug. 3. Insert the new plug. 4. Tighten, but not TOO tight. 5. Push the plug wire back on. 6. Repeat 1-5 for the other 7 plugs. You might find it easier to access some of the plugs via the holes above the tire wells. From the side of the vehicle, you'll see a hole near the top of the tire well. If you change the plugs, it's best to replace the wires also. NOTE: The wires and plugs on Grand Marquis are rated for 100,000 miles or more with proper maintenance. NOTE 2: Unless you area good mechanic, changing the plugs can cause you more heartache than the price of having a professional do it for you. With all the Computerized stuff on 2000 model year and later automobiles, it's best to pay a price for a complete tune-up. Good Luck -tj-
Wiki User
∙ 17y ago
Wiki User
∙ 15y agothis car has a coil pack per spark plug, just next to the fuel rails youll see a coil pack, under that there is the spark plugs, there are no spark plug wires for this car, kinda a weird design, but makes trouble shooting a breeeze
Wiki User
∙ 16y agoyou pull the spark plug with either one of the standard plud sockets (there are only 2) you then locate the number on the old plug and call it in to a auto parts store and get your self new ones, then you put the new ones back in....
Wiki User
∙ 14y agoC.O.P. ( coil on plug ) They are under the coil's.
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