Easy job, they are located under the coil's. Disconnect the coil primary wire connector then using a torx bit remove the two screws holding the coil to the valve cover then lift the coil from the engine and remove the spark plug.There are no spark plugs on this engine.
remove the coil packs on top the engine with a small tork bit then change plugs
under the coil paks on the valve covers
The Concorde could misfire for several reasons. Start by checking for proper fire to the spark plugs. Then check engine compression to see if a cylinder compression is down.
you have to take off the six coils! which are located on the center of the engine between the loops of the intake... and then just remove the spark plugs and replace with new one..
If it is a 3.0 liter V6 EFI. Then it will be .044
The spark plugs are under the plug wires in the middle of the valve cover.
You have to remove the intake plenum to access.
Change oil every 3000 miles. At 100,000, change the timing belt, water pump, coolant, and spark plugs. Replace the air filter as needed.
Every 60,000 miles.
Replace plugs and filters, change fluids, replace serpentine belt. Plugs are replaced by removing fuel rails, removing coil packs over plugs, then changing plugs.
number #1 spark plug is located (if u are looking under hood) right side first one closest to you. NOTE* TO REPLACE SPARK PLUGS ON A CHRYSLER 3.5 LITER V-6 YOU MUST ALSO REPLACE UPPER PLENTIUM GASKET!!!!
You have to remove the upper intake manifold.