how to fix engine misfire in Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery before starting work.
• Ensure the vehicle is on a flat surface and secure it with wheel chocks.

2. Replace Spark Plugs

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coils by unscrewing the retaining bolts and gently pulling them out.
• Use the spark plug socket to remove the old spark plugs.
• Inspect and adjust the gap of the new spark plugs according to the manufacturer’s specifications.
• Install the new spark plugs and torque them to the specified value (typically around 13-15 lb-ft).
• Reinstall the ignition coils and secure them in place.

3. Inspect and Replace Ignition Coils (if necessary)

• Tools Required: Socket set, torque wrench.
• If any ignition coils are found faulty, remove the corresponding coil as described in the previous step.
• Install new ignition coils, ensuring they are seated properly.
• Torque bolts to manufacturer specifications (usually around 8-10 lb-ft).

4. Clean or Replace Fuel Injectors (if necessary)

• Tools Required: Fuel injector cleaning kit or replacement injectors, safety goggles.
• Disconnect the fuel line and electrical connectors from the injectors.
• Use a fuel injector cleaning kit to clean the injectors according to the manufacturer’s instructions.
• If cleaning does not resolve the issue, replace the injectors with new ones.
• Reconnect the fuel line and electrical connectors securely.

5. Check for Vacuum Leaks

• Inspect all vacuum lines and hoses for signs of wear or damage.
• Replace any damaged hoses.
• Use a smoke machine or carburetor cleaner to check for leaks around the intake manifold.