how to fix P0302 misfire code on my Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

• Gather tools and parts required.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the ignition coil from cylinder 2.
  • Unplug the electrical connector.
  • Remove the retaining bolts and lift off the coil.
• Remove the spark plug using the spark plug socket.
  • Inspect for damage or excessive wear.
• Replace with a new spark plug, ensuring proper gap (typically 0.028-0.060 inches for Ford F-150).
• Torque the spark plug to manufacturer specifications (usually around 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Torque wrench
• If the ignition coil appears damaged, replace it.
• Install the new ignition coil over the spark plug.
• Secure it with the retaining bolts and reconnect the electrical connector.
• Torque the bolts to manufacturer specifications.

4. Check and Replace Fuel Injector (if necessary)

• Tools Required: Fuel injector removal tool, torque wrench
• Disconnect the fuel line and electrical connector from the fuel injector in cylinder 2.
• Remove the fuel injector using the fuel injector removal tool.
• Inspect for clogs or damage; replace if necessary.
• Install the new fuel injector, ensuring a proper seal, and reconnect the fuel line and electrical connector.

5. Clear Codes and Test

• Reconnect the negative battery terminal.
• Use the OBD-II scanner to clear the P0302 code.
• Start the engine and monitor for any warning lights or misfires during idle and acceleration.