Under the coil on each cyl.
8 spark plugs
8 spark plugs
there is a coil on each one. remove the coil and there is the plug.
it's located under the steerinf wheel its a lil silver box with 2 wire 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.
they are located under the coil pack
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 )
The relay is located in the engine compartment to the right of the heater hoses if you are looking at them. It dose not look like a regular rely. It has a connector that plugs into it.
Each spark plug has a coil on the top. Just remove the coil.
The original plugs should be good for around 100,000 miles ( 160,000 ) kms. Take it from there.
remove engine cover