how to troubleshoot P0301 misfire code in Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Remove Spark Plug

• Tools Required: Spark plug socket, ratchet, extension.
• Sub-steps:
  1. Remove the ignition coil by unscrewing the retaining bolts and disconnecting the electrical connector.
  2. Use the spark plug socket to carefully remove the spark plug from cylinder 1.
  3. Inspect the spark plug for wear or damage, and replace if necessary.

3. Replace Ignition Coil (if faulty)

• Tools Required: Ratchet, socket set.
• Sub-steps:
  1. Install the new ignition coil onto cylinder 1.
  2. Reconnect the electrical connector and secure the coil with retaining bolts.

4. Clean or Replace Fuel Injector

• Tools Required: Fuel injector puller (if necessary), cleaning solution.
• Sub-steps:
  1. Disconnect the fuel line and the electrical connector from the fuel injector.
  2. Remove the fuel injector from the cylinder head.
  3. Clean the injector using appropriate cleaning solution or replace it with a new one if found defective.

5. Reinstall Spark Plug and Components

• Sub-steps:
  1. Reinstall the spark plug and torque it to the manufacturer's specifications (typically around 13-15 lb-ft).
  2. Reconnect the ignition coil and any other components that were removed or disconnected.

6. Final Checks

• Reconnect the negative battery terminal.
• Start the engine and allow it to idle for a few minutes to check for any misfires.