how to fix the P0301 cylinder 1 misfire code on my Ford F-150 12th Generation (2009-2014)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery's negative terminal.
• Allow the engine to cool completely before starting work.

2. Replace Spark Plug

1. Remove the ignition coil cover (if applicable) to access the spark plug.
2. Use a spark plug socket and ratchet to remove the spark plug from cylinder 1.
3. Inspect the old spark plug for wear or damage; compare it to manufacturer specifications.
4. Install a new spark plug, ensuring it is gapped correctly according to the vehicle's specifications (typically around 0.054 inches).
5. Torque the spark plug to the manufacturer-recommended specification (usually around 13-15 lb-ft).

3. Replace Ignition Coil

1. Unclip the ignition coil connector and remove the coil from cylinder 1.
2. Install the new ignition coil, ensuring it is seated properly.
3. Reconnect the ignition coil connector securely.

4. Clean or Replace Fuel Injector

1. If applicable, remove the fuel rail to access the fuel injector for cylinder 1.
2. Clean the injector with a fuel injector cleaner or replace it if it is clogged or faulty.
3. Reassemble the fuel rail and ensure all connections are tight.

5. Reconnect Battery and Clear Codes

1. Reconnect the negative battery terminal.
2. Use an OBD-II scanner to clear the P0301 code from the system.