1. Gather the necessary tools and materials. You will need a new spark plug, a spark plug wrench, a ratchet, a socket set, a flat-head screwdriver, and a thread repair kit.
2. Prepare the engine. Turn off the engine and allow it to cool down. Disconnect the negative terminal of the battery.
3. Remove the air intake manifold. Locate the air intake manifold on the top of the engine. It is usually held in place by several bolts. Remove the bolts and carefully lift off the manifold. Set the manifold aside.
4. Locate the stripped spark plug. The stripped spark plug is located on the left side of the engine. Use a spark plug wrench to loosen and remove the spark plug.
5. Clean the spark plug hole. Use a flat-head screwdriver and compressed air to clean the spark plug hole. Remove any dirt, debris, or metal shavings from the hole.
6. Install the thread repair kit. Follow the instructions included with the thread repair kit to install the kit. This typically involves inserting a threaded insert into the spark plug hole and then using a special tool to expand the insert.
7. Install the new spark plug. Screw the new spark plug into the spark plug hole. Tighten the spark plug until it is snug.
8. Reinstall the air intake manifold. Carefully place the air intake manifold back onto the engine. Secure the manifold with the bolts that you removed earlier.
9. Reconnect the battery. Reconnect the negative terminal of the battery.
10. Test the engine. Start the engine and let it run for a few minutes. Listen for any unusual noises or check for any leaks. If everything seems fine, turn off the engine and replace the spark plug wire.
Your stripped spark plug should now be repaired.
