how to fix P0301 misfire code on Ford F-150 14th Generation (2021-2024)

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Ensure the engine is cool before starting work.

2. Replace Spark Plug

• Remove the engine cover if necessary.
• Locate cylinder 1’s spark plug (usually the front left on a V6/V8 engine).
• Use a spark plug socket and ratchet to remove the old spark plug.
• Inspect the spark plug for carbon buildup or damage.
• Install a new spark plug with the correct gap (check specifications in the owner's manual).
• Torque the spark plug to the manufacturer's specifications (typically around 13-18 lb-ft).

3. Replace Ignition Coil

• Disconnect the electrical connector from the ignition coil.
• Remove the bolt securing the ignition coil using a socket.
• Gently pull the ignition coil out of the cylinder head.
• Install the new ignition coil, ensuring it is seated properly.
• Reattach the electrical connector and secure with the bolt.

4. Inspect/Replace Fuel Injector

• If necessary, disconnect the fuel rail to access the injector.
• Remove the retaining clip and unplug the fuel injector connector.
• Pull out the fuel injector; inspect for clogs or damage.
• If replacing, install a new fuel injector, ensuring proper seating and alignment.
• Reattach the fuel rail and connectors, ensuring there are no leaks.

5. Compression Test (if needed)

• Remove the spark plug from cylinder 1.
• Insert a compression gauge into the spark plug hole.
• Crank the engine and record the compression reading.
• Compare the reading to the manufacturer's specifications; if low, further engine diagnostics may be required.