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

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to avoid electrical shorts.
• Allow the engine to cool before starting work.

2. Replace Spark Plug

• Remove the engine cover (if applicable).
• Using a socket wrench, remove the spark plug from cylinder 1.
• Inspect the old spark plug for damage; replace with a new spark plug if necessary.
• Torque the new spark plug to the manufacturer’s specifications (usually around 13-15 lb-ft).
• Reinstall the engine cover.

3. Inspect and Replace Ignition Coil

• Disconnect the connector from the ignition coil on cylinder 1.
• Remove the ignition coil mounting bolts.
• Carefully pull out the ignition coil from the spark plug hole.
• Inspect for damage and replace with a new ignition coil if needed.
• Reinstall the ignition coil and connect the electrical connector, ensuring it's secure.

4. Check and Replace Fuel Injector

• Disconnect the fuel injector electrical connector on cylinder 1.
• Remove the retaining clips or bolts securing the fuel injector.
• Carefully pull the fuel injector out of the fuel rail.
• Inspect the injector for clogs or damage; replace it if necessary.
• Reinstall the new fuel injector and secure it with clips or bolts, then reconnect the electrical connector.

5. Perform Compression Test (if necessary)

• Remove the spark plug from cylinder 1 and insert a compression gauge.
• Crank the engine and record the compression reading.
• Compare the reading to manufacturer specifications; if low, further diagnostics may be required for internal engine issues.