The oil pan wont make any difference in that unless you have disconnected the engine ground. Your question suggests that the engine wont crank which to a mechanic means that the starter wont engage, I am thinking that you mean that it wont fire or start in which case recheck your plug wires to be sure they are in the correct order, many people mix them up when changing, and make sure you push them onto the plug completely till they click ( you can feel or hear the metal inside the plug wire end go over the plug tip). and be sure the plugs are gapped correctly, they dont come gapped for your vehicle right out of the box.
8 spark plugs
8 spark plugs
No
Make sure the air filter is clean. Fuel can't burn without air. Also try replacing the spark 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.
Remove the coil on top of the plug, they are there.
they are located under the coil pack
Under the coil on each cyl.
cooliant in resvoir tank will be brown
Bad Rings. Get your Rings replaced asap.
You do not need to remove the fuel rail to remove the spark plugs.
look on the very top of the motor and you will see a long rail them are the spark injectors for your spark plugs. pull them injectors out and you will see your spark plugs.