how to fix P0302 misfire code in my Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety.
• Allow the engine to cool before starting any work.

2. Inspect and Replace Spark Plug

• Remove the engine cover if applicable.
• Locate the spark plug for cylinder 2.
• Use a spark plug socket and ratchet to remove the spark plug.
• Inspect the spark plug for wear, carbon buildup, or damage.
• Replace with a new spark plug if necessary, ensuring correct gap specification (usually around 0.030 inches).
• Torque the spark plug to the manufacturer's specification (typically 12-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil of cylinder 2.
• Remove the bolt securing the ignition coil using a socket.
• Pull the ignition coil out of the spark plug tube.
• Install the new ignition coil and secure it with the bolt.
• Reconnect the electrical connector.

4. Inspect and Replace Fuel Injector

• Disconnect the electrical connector from the fuel injector of cylinder 2.
• Remove the retaining clips and pull the injector out of the fuel rail.
• Install the new fuel injector, ensuring proper seating.
• Reconnect the electrical connector and replace any retaining clips.

5. Reassemble and Check for Leaks

• Reinstall any components removed, such as the engine cover.
• Reconnect the negative battery terminal.
• Start the engine and listen for any unusual sounds.