1.- Remove the boot from the sparkplug (do not pull by the wire, grasp the boot and pull)
2.- Blow some pressurized air around the sparkplug (to remove debris, not necessary, but a good idea)
3.- With the socket and ratchet wrench, loosen and remove the sparkplug (counterclockwise)
4.- Install is the reverse of above, do not overtighten the sparkplugs. A good idea is to put some anti seize paste on the sparkplugs threads (if they do not have any)

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1999 Porsche 996 Carrera Convertible
1994 420E - SOLD
1986 300E - SOLD, what a car
609 Certified