maybe someone has a picture but the general rule if you want to find them is follow the leads that will take you upto the side of your engine where the spark plugs are
8 spark plugs
8 spark plugs
You don't need a picture. Remove the coil ( coil on plug ) one small screw, remove the wire, remove the coil, there is the plug. Just be sure to get the right plugs.
Remove the spark plug wires from your 2002 Mercury Grand Marquis spark plugs. Remove the spark plugs by turning them to the left with a deep well 5/8 socket. Reverse the process to install the new spark plugs.
Start with the ign. wires and the spark plugs.
The 1991 Mercury Marquis spark plug gap is .034. Most spark plugs will be pre-gapped by the spark plug manufacturer.
.050
Under the coil on each cyl.
According to one of Fords websites : For a 1993 Mercury Grand Marquis , 4.6 liter V8 engine : ( the spark plugs are gapped at .054 inch )
.054 inch ( according to fordparts.com )
The original plugs should be good for around 100,000 miles ( 160,000 ) kms. Take it from there.
there is a coil on each one. remove the coil and there is the plug.