how to fix a P0301 misfire code in my Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery cable to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil cover if necessary.
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil from cylinder 1.
• Use the spark plug socket to remove the spark plug.
• Inspect the spark plug; replace it if fouled or worn (gapping should be according to manufacturer specifications, typically around 0.030 inches).
• Install the new spark plug and torque it to the manufacturer’s specifications (typically around 13 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Inspect and Replace Ignition Coil

• Tools Required: Ratchet, socket set.
• If the ignition coil appears damaged or faulty, replace it with a new one.
• Remove the bolts securing the ignition coil and then pull it out of the spark plug well.
• Install the new ignition coil and secure it with bolts.
• Reconnect the ignition coil connector.

4. Check Fuel Injector

• Tools Required: Fuel injector removal tool (if necessary).
• Inspect the fuel injector wiring and connectors for damage.
• If necessary, remove the fuel injector and check for clogs or leaks.
• Clean or replace the fuel injector as needed.
• Reinstall the fuel injector and reconnect the wiring.

5. Final Checks

• Reconnect the negative battery cable.
• Start the engine and monitor for any misfire symptoms.
• Clear the P0301 code with an OBD-II scanner and take the vehicle for a test drive to verify the repair.