how to fix the P0301 code on my Ford Mustang S650 (2024-Present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool before working on it.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector from cylinder 1.
• Remove the ignition coil by unscrewing it from the cylinder head.
• Use a spark plug socket to remove the spark plug from cylinder 1.
• Inspect the spark plug for wear; if damaged, replace it with a new one. Torque the new spark plug to the manufacturer’s specifications (typically around 13-15 lb-ft).
• Reinstall the ignition coil and reconnect the connector.

3. Check and Replace Fuel Injector

• Tools Required: Fuel injector puller (if necessary), socket set.
• Relieve fuel system pressure by removing the fuel pump relay and starting the engine until it stalls.
• Disconnect the fuel lines and electrical connector from the fuel injector in cylinder 1.
• Remove the fuel injector using an injector puller if needed.
• Inspect the injector for clogs or damage; replace if necessary.
• Install the new injector, ensuring it seats properly, and reconnect the fuel lines and electrical connector.

4. Perform Compression Test

• Tools Required: Compression tester.
• Remove spark plugs from all cylinders for accurate readings.
• Insert the compression tester into the spark plug hole of cylinder 1.
• Crank the engine and note the compression reading. Compare it to the manufacturer's specifications.
• If compression is low, further investigation may be needed for potential internal engine issues.