Where are spark plugs located on 2000 Mercury Grand Marquis?

Answer 1

Answerwhen standing beside the car look at the top of the engine , follow the black cover down to the bottom side and you will see a silver bar that runs the length of the top of the engine. connected to the underside of that bar you will see orange injectors going into the engine and between each of them you will see a round black apparatus. Connected to those apparatuses ( coils ) are electrical connectors under the coils you will see a short rubber boot. That boot is connected to the top of the spark plug. This system is called coil on plug. It allows the engine to control the firing of the cylinder independently of the others. Your engine will go into a safe mode if you were to run low on coolant and begin to overheat. one half of the cylinders loose spark and the cylinders act as an air pump to remove heat from the engine. This is a standard system on the 2000 and newer 4.6L engine. Its not an option its standard and you can read about the system in the owners manual.