how to fix the P0301 misfire code in my Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Tools Required: OBD-II scanner, compression tester, fuel pressure gauge, socket set, torque wrench, multimeter
• Disconnect the negative battery terminal to prevent electrical short circuits.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

1. Remove the engine cover (if applicable) using a socket set.
2. Disconnect the electrical connector from the ignition coil on cylinder 1.
3. Remove the ignition coil by unscrewing it and pulling it out gently.
4. Use a spark plug socket to remove the spark plug from cylinder 1.
5. Inspect the old spark plug for wear or damage; compare with manufacturer specifications.
6. Install the new spark plug with a torque value of 13 lb-ft (17.6 Nm).
7. Reinstall the ignition coil and reconnect the electrical connector.

3. Test Ignition Coil

1. Use a multimeter to check the resistance of the ignition coil; ensure it meets manufacturer specifications.
2. If the coil is faulty, replace it with a new one. Follow the same removal and installation steps as above.

4. Inspect and Test Fuel Injector

1. Remove the fuel injector connector and use a noid light to verify that the injector is receiving a signal.
2. If the injector is not firing, check the wiring and replace the fuel injector if necessary.
3. Reinstall the fuel injector and reconnect the electrical connector.

5. Check Compression

1. Insert the compression tester into the spark plug hole of cylinder 1.
2. Crank the engine and record the compression reading.
3. Compare the result with manufacturer specifications; if low, further investigation into valve or piston issues may be needed.