my Ford F-150 14th Generation (2021-2024) has a check engine light with code P0301, what does it ind...

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1:
  • Unscrew the bolts securing the ignition coil.
  • Gently pull the ignition coil out of the spark plug well.
• Remove the spark plug using a spark plug socket:
  • Turn counterclockwise to unscrew.
• Inspect the spark plug for wear or damage. Replace if necessary.
• Install a new spark plug:
  • Torque the new spark plug to 13 lb-ft (18 Nm).
• Reinstall the ignition coil and secure it with the bolts.

3. Check and Replace Ignition Coil (if necessary)

• If the ignition coil appears damaged or if the spark plug replacement does not resolve the issue:
  • Disconnect the electrical connector from the ignition coil.
  • Remove and replace the ignition coil with a new one.
  • Reconnect the electrical connector.

4. Fuel Injector Inspection

• If misfire persists, inspect the fuel injector for cylinder 1:
  • Disconnect the fuel injector connector.
  • Use a multimeter to test the injector for proper resistance (typically around 12-16 ohms).
• Replace the fuel injector if it is faulty:
  • Remove the retaining clips and pull the injector out.
  • Install a new fuel injector and reconnect the electrical connector.

5. Compression Test (if misfire continues)

• Perform a compression test on cylinder 1:
  • Remove the spark plug.
  • Insert the compression gauge into the spark plug hole.
  • Crank the engine to take the reading.
• Compare the reading with manufacturer specifications. If below standard, internal engine repairs may be necessary.