Tools Needed:
3/8" Rachet, Rachet Extensions, Spark Plug Socket, Spark Plug Gap Tool, Small Clean Rubber Hose (Optional: Plug Boot Puller, anti-seize compound, silicone spray.) Time Needed: 20-40 Minutes

Notes: Make sure you refer to your owner's manual for specific plug information.

Precautions: Spark plugs can vary in a number of ways and using the incorrect plug can damage your engine. Be sure you use the plug recommended by the manufacturer. Additionally, remove plugs only when the engine is cold.

To begin, disconnect the spark plug wire from the actual plug. Do not pull or yank on the actual wire as it is easily damaged. The best way to remove the wire is to grasp it at the heavy boot end which is located just above the head of the actual spark plug. Gently twist the boot and pull it from the top of the plug.

Once the wire is removed, use the rachet, extensions, and plug socket to loosen the spark plug. If the plug is stuck, use the heel of your hand to tap the end of the rachet and break it free.

Before completely removing the plug, set the rachet and socket aside, and use the small piece of clean hose to blow away any dirt or debris that may fall into the engine when you fully remove the plug. After insuring there is no dirt at the plug base, finish removing it by hand or with the socket.

Take a moment to examine the plug you have just removed. It should have a slight golden brown tint at the base. White specks or a heavy black build-up could be indications of a larger problem. If you notice either of these, consult with your auto mechanic. Provided the plug looks good, you are ready to install your new plug.

Remove the new plug from it's box, and insure that it is gapped properly. The gapping specifications can be found on a small decal under the hood, or in your owner's manual. To gap the plug, insert the gapping tool between the hooked end and the bottom of the plug. It should be inserted at the measurement that corresponds to your manufacturer's specifications.

When the plug is properly gapped, you can begin hand threading it into the engine. I recommend using a bit of never-seize compound on the threads before inserting the plug. This will insure that the plugs come out easily the next time they need changed. After hand tightening the plug (or using a plug boot tool), snug it down with the rachet and socket. There is no need to force the plug in tight. Doing so may actually damage the plug.

To reattach the plug wire, place it over the head of the new plug and push it firmly into place. You may wish to add a bit of silicone spray inside the boot of the wire to insure that it is easy to remove the next time you change the plugs. After completing the connectionn, gently feel around the boot to insure that the metal tip of the plug is fully inserted into the boot.