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

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during the repair.

2. Replace Spark Plug

• Remove the spark plug wire or ignition coil from cylinder 1.
• Using a spark plug socket, remove the old spark plug.
• Check and adjust the gap of the new spark plug to the manufacturer's specifications.
• Install the new spark plug, ensuring it is torqued to the recommended value (usually around 13-15 lb-ft for most applications).
• Reconnect the spark plug wire or ignition coil.

3. Inspect and Replace Ignition Coil (if necessary)

• If the ignition coil is suspected to be faulty, remove it from cylinder 1 after disconnecting the electrical connector.
• Inspect the coil for cracks or damage.
• Replace with a new ignition coil if necessary, securing it in place and reconnecting the electrical connector.

4. Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• Remove the spark plug and attach the compression gauge.
• Crank the engine and record the compression reading. It should meet the manufacturer's specifications (usually between 150-200 psi).
• If the reading is low, further investigation for internal engine issues may be required.

5. Fuel Injector Inspection

• If ignition components are in good condition, inspect the fuel injector for cylinder 1.
• Remove the fuel rail if necessary to access the injector.
• Test the injector for proper spray pattern using a fuel injector tester or replace it with a new one.