The spark plugs on a 2003 Ford Expedition are located on the top of the engine, directly above the cylinder head. There are eight spark plugs in total, four on each side of the engine.
To access the spark plugs, you will need to:
1. Open the hood of the Expedition.
2. Remove the plastic engine cover.
3. Locate the spark plugs.
4. Use a spark plug wrench to loosen and remove the spark plugs.
5. Install the new spark plugs.
6. Tighten the spark plugs using a torque wrench.
7. Replace the plastic engine cover.
8. Close the hood of the Expedition.
Here are some additional tips for changing the spark plugs on a 2003 Ford Expedition:
* Make sure the engine is cool before you begin working on it.
* Use a spark plug wrench with a magnetic tip to help you remove and install the spark plugs.
* Be careful not to drop the spark plugs into the engine.
* If you are replacing the spark plugs yourself, make sure you use the correct type of spark plugs for your engine.
