- A set of spark plug wires
- A spark plug wrench
- A socket wrench with a 5/8-inch socket
- A flathead screwdriver
- A set of metric wrenches
Here are the steps on how to replace the rear spark plugs on a 1990 Dodge Dynasty:
1. Disconnect the negative battery terminal.
2. Locate the spark plug wires. They are connected to the spark plugs with a rubber boot.
3. Use a flathead screwdriver to pry off the rubber boots from the spark plugs.
4. Use the spark plug wrench to loosen the spark plugs.
5. Remove the spark plugs from the engine.
6. Apply a small amount of anti-seize to the new spark plugs.
7. Screw in the new spark plugs until they are hand-tight.
8. Use the socket wrench to tighten the spark plugs to 18 foot-pounds.
9. Replace the rubber boots on the spark plugs.
10. Reconnect the negative battery terminal.
11. Start the engine and check for any leaks.
