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

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool and disconnect the negative battery terminal to prevent electrical shock.

2. Replace Spark Plug

• Sub-steps:
  1. Remove the engine cover if applicable.
  2. Disconnect the ignition coil connector from the spark plug.
  3. Remove the ignition coil using a socket wrench.
  4. Unscrew the old spark plug using a spark plug socket and extension.
  5. Install the new spark plug, ensuring it is torqued to the manufacturer's specifications (typically around 13-15 lb-ft).
  6. Reinstall the ignition coil and reconnect the ignition coil connector.

3. Replace Ignition Coil (if necessary)

• Sub-steps:
  1. If the ignition coil was found faulty during inspection, remove it as detailed above.
  2. Install the new ignition coil, ensuring it seats correctly on the spark plug.
  3. Reconnect the ignition coil connector.

4. Clean or Replace Fuel Injector (if necessary)

• Sub-steps:
  1. If the fuel injector was found to be malfunctioning, disconnect the fuel line and electrical connector.
  2. Remove the fuel injector from the fuel rail.
  3. Clean or replace the fuel injector as needed, ensuring O-rings are replaced.
  4. Reinstall the fuel injector and reconnect the fuel line and electrical connector.

5. Recheck for Vacuum Leaks

• Sub-steps:
  1. Inspect all hoses and connections around the intake manifold for signs of wear or disconnections.
  2. Use a smoke machine or carb cleaner to check for leaks while the engine is running.
  3. Replace any damaged hoses or gaskets found during inspection.