my Ford F-150 Fourteenth Generation (2021-present) has a check engine light with code P0301, what do...

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Spark Plug

• Sub-steps:
  1. Locate the spark plug on cylinder 1 (refer to the service manual for cylinder numbering).
  2. Remove the ignition coil by unbolting and disconnecting the electrical connector.
  3. Use a spark plug socket to remove the old spark plug.
  4. Inspect the spark plug for wear; replace it with a new spark plug with the manufacturer's specified gap.
  5. Reinstall the ignition coil and reconnect the electrical connector.

3. Test Ignition Coil

• Sub-steps:
  1. Remove the ignition coil from cylinder 1.
  2. Use a multimeter to check the primary and secondary resistance of the ignition coil.
  3. If the ignition coil is faulty, replace it with a new one.
  4. Reinstall the ignition coil after testing.

4. Check Fuel Injector

• Sub-steps:
  1. Disconnect the fuel injector connector for cylinder 1.
  2. Use a multimeter to test for proper voltage supply.
  3. If the injector is faulty, replace it.
  4. Reconnect the fuel injector and ensure all connections are secure.

5. Perform Compression Test

• Sub-steps:
  1. Remove the spark plug from cylinder 1.
  2. Insert a compression gauge into the spark plug hole.
  3. Crank the engine and record the compression reading.
  4. Compare the reading with manufacturer specifications; if low, further investigation is needed for internal engine issues.

Tools Required:

• OBD-II scanner
• Multimeter
• Socket set
• Compression gauge
• Torque wrench

Parts Required:

• Spark plug
• Ignition coil (if faulty)
• Fuel injector (if faulty)

Estimated Repair Time: 2-4 hours

Safety Warnings:

• Disconnect the battery before working on electrical systems.
• Allow engine to cool before opening any components.