how to fix P0301 misfire code in Ford F-150 13th Generation (2015-2020)

Solution

1. Preparation

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

2. Replace Spark Plug and Ignition Coil (if necessary)

• Tools Required: Socket set, torque wrench, dielectric grease.
• Sub-steps:
  1. Remove the engine cover (if applicable) to access the spark plug and ignition coil.
  2. Disconnect the electrical connector from the ignition coil.
  3. Remove the ignition coil using a socket wrench.
  4. Remove the spark plug with a spark plug socket.
  5. Inspect the old spark plug for damage; replace it with a new spark plug with the correct gap (typically 0.050 inches for most Ford engines).
  6. Apply dielectric grease to the ignition coil boot before installation.
  7. Reinstall the ignition coil and connect the electrical connector.
  8. Torque the ignition coil to manufacturer specifications (usually around 10-12 ft-lbs).

3. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner, cleaning kit (if needed).
• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Remove the fuel injector using the appropriate socket.
  3. Inspect the injector for clogs or damage; clean it with a fuel injector cleaner if needed.
  4. Reinstall the injector and reconnect the electrical connector.

4. Check Compression

• Tools Required: Compression tester.
• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert the compression tester into the spark plug hole.
  3. Crank the engine for a few seconds and record the compression reading.
  4. Compare the reading to the specifications in the service manual (typically around 120-150 psi).
  5. If low, further investigation into internal engine components may be necessary.