To change spark plugs, first, purchase them following the suggested maintenance schedule and make sure that these are the right type based on your engine as shown in the Emission Control Information label under the hood. Assemble the tools required, such as a spark plug socket, extensions, a gap gauge as well as a torque wrench. Never remove the engine until fully cooled, and observe the new plugs, and check the clearance between them with a type of wire gauge, so that there is a small drag between the electrodes. Take away the
Spark Plug Wire by pulling off the boot and blow away any debris in the spark plug hole with compressed air or a bicycle pump. With the spark plug socket, turn the old plug counterclockwise and remove it. Use reference images to compare the old plug with reference images to determine engine conditions. Insert a new plug into the hole by hand until it cannot be rotated further and then screw it in with a torque wrench or ratchet, with a short piece of rubber hose to help with this and avoiding cross-threading. Before connecting the spark plug wire to the new plug, verify that the spark plug wire is clean and then connect it to the new plug using a twisting action, repeat the process with the rest of the plugs and that they do not get mixed up.