Tools You'll Need:
* Socket wrench set: You'll need a socket that fits your spark plugs (likely 5/8" or 13/16", check your manual). A ratchet and extensions will be helpful to reach the plugs.
* Spark plug socket: A spark plug socket is crucial because it has a rubber insert to grip the plug without damaging it.
* Torque wrench: Absolutely essential to avoid damaging the threads. Torque specifications are crucial and vary by plug type. Consult your owner's manual.
* Gloves: To keep your hands clean.
* Penetrating oil (like PB Blaster): Helps loosen stubborn plugs.
* New spark plugs: Make sure you buy the correct type and heat range for your engine (check your owner's manual). Using the wrong plugs can severely damage your engine.
* Wire brush or pick: For cleaning the spark plug well.
* Rags or shop towels: To clean up.
* Jack and jack stands (highly recommended): To safely lift the car and provide stable access to the engine bay. Never work under a car supported only by a jack.
Procedure:
1. Safety First: Disconnect the negative (-) terminal from your car battery. This prevents accidental shorts and shocks. Park on a level surface, engage the parking brake, and chock the wheels.
2. Access the Spark Plugs: The 3.2L engine in the 1998 Concorde has the spark plugs located on top of the engine, making them relatively accessible. However, you might need to remove some components to get better access. Consult your repair manual for specific details on which components to remove (possibly some plastic covers or air intake components).
3. Remove the Ignition Coils: These are usually held in place by clips or bolts. Carefully disconnect the electrical connectors from each coil before removing them. Take note of the coil location for easy reinstallation. Set the coils aside in a safe place.
4. Remove the Spark Plugs: Spray penetrating oil into each spark plug well, let it sit for a few minutes to loosen any corrosion or carbon buildup. Use your spark plug socket and ratchet to carefully remove the spark plugs. Go slowly to avoid stripping the threads.
5. Clean the Spark Plug Wells: Use a wire brush or pick to clean out any dirt, debris, or carbon buildup from the spark plug wells. This helps ensure a good seal for the new plugs.
6. Install the New Spark Plugs: Carefully screw in the new spark plugs by hand until they are snug. Then, use your torque wrench to tighten them to the manufacturer's specified torque. Do not overtighten.
7. Reinstall the Ignition Coils: Carefully reinstall the ignition coils, making sure the electrical connectors are securely connected.
8. Reconnect the Battery: Reconnect the negative (-) battery terminal.
9. Start the Engine: Start the engine and check for any misfires or unusual noises. If everything seems okay, let the engine run for a few minutes to allow the engine to reach operating temperature.
10. Check for Leaks: Inspect the spark plug area for any leaks after the engine has run for a short time.
Important Notes:
* Consult a repair manual: A repair manual specific to your 1998 Chrysler Concorde 3.2L is highly recommended. It will provide detailed instructions, diagrams, and torque specifications.
* Gap the spark plugs: Some spark plugs may need to be gapped to the manufacturer's specification. Use a spark plug gapping tool if necessary (your repair manual will tell you if this is required).
* If you're not comfortable: If you are not comfortable performing this task, it's best to take your car to a qualified mechanic. Incorrectly installed spark plugs can lead to engine damage.
This guide provides a general overview. Always prioritize safety and consult your owner's manual or a professional repair manual for precise instructions specific to your vehicle.
