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

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before proceeding with any work.

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket, dielectric grease.
• Remove the spark plug wire or ignition coil from cylinder 1.
• Use a spark plug socket to remove the spark plug.
• Inspect the spark plug for signs of wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one, ensuring it meets OEM specifications.
• Apply a small amount of dielectric grease to the spark plug boot before reattaching.

3. Check and Replace Ignition Coil

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
• Inspect the ignition coil for cracks or signs of wear.
• If faulty, replace the ignition coil with a new one, ensuring it is properly seated and the screws are torqued to manufacturer specifications.

4. Inspect and Replace Fuel Injector

• Tools Required: Socket set, torque wrench, fuel injector puller (if needed).
• Remove the fuel rail if necessary to access the fuel injector for cylinder 1.
• Disconnect the electrical connector from the fuel injector.
• Remove the fuel injector, checking for clogs or damage.
• Replace with a new fuel injector if issues are found, ensuring it is properly seated.

5. Address Compression Issues (if applicable)

• Tools Required: Compression gauge.
• Remove the spark plug from cylinder 1.
• Insert the compression gauge into the spark plug hole.
• Crank the engine and check the compression reading.
• If the reading is below specifications, further engine diagnostics may be required to check for valve or piston issues.