how to fix P0301 code for misfire on Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative terminal of the battery.
• Allow the engine to cool before starting work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, spark plug socket, torque wrench
• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
• Disconnect the electrical connector from the ignition coil.
• Remove the spark plug using a spark plug socket.
• Inspect the spark plug for wear; replace if necessary.
• Install a new spark plug, tightening to the manufacturer's specified torque (typically 13-20 lb-ft).
• Reconnect the ignition coil.

3. Check and Replace Ignition Coil

• If misfire persists after spark plug replacement, remove the ignition coil from cylinder 1.
• Tools Required: Socket set
• Inspect the coil for any visible damage.
• If defective, replace it with a new ignition coil.
• Reinstall the ignition coil and reconnect the electrical connector.

4. Inspect and Clean Fuel Injector

• Remove the fuel injector from cylinder 1.
• Tools Required: Fuel injector puller (if necessary), cleaning solvent
• Clean the injector with a suitable solvent or replace it if clogged or damaged.
• Reinstall the injector ensuring it is seated correctly.

5. Compression Test

• Use a compression gauge to check the compression of cylinder 1.
• Tools Required: Compression gauge
• If the compression is below the manufacturer’s specification, further investigation of internal engine components may be required (e.g., valves, piston rings).