In order to pull the flywheel you will need a gear puller.
If you don't have a gear puller I use a long screwdriver (18") and place it under the flywheel. First loosen the flywheel nut so that it is flush with the top of the crankshaft. While applying upward pressure on the flywheel with the screwdriver hit the crankshaft/nut with a hammer. The flywheel should pop loose. Remove the flywheel nut and flywheel.
What was the condition of the original spark plug? What is the condition of the new spark plug after attempting to start (wet, dry)?
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles