I am looking into how to change out my spark plugs on my 4 cylinder 2005 Mazda 3.
All I know to do is:
1: Open each cylinder.
2: Use a spark plug socket (with the rubber insert) to remove the old spark plug in each cylinder.
3: Insert new spark plug in each cylinder and tighten it (don't over-torque).
4: Close the cylinder back up.
Given the fact that I am not that experienced in working on cars, I feel like this is too simple. Is there anything I'm missing? Safety precautions? Anything that I need to put on the spark plugs before putting the new ones in?