my Ford F-150 13th Generation (2015-2020) has a check engine light and a misfire

Solution

1. Preparation

• Gather necessary tools and parts before starting.
• Ensure the vehicle is parked on a flat surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Replace Spark Plugs

• Tools Required: Spark plug socket, ratchet, torque wrench, gap gauge.
• Remove the ignition coil cover if applicable.
• Disconnect the electrical connector from each ignition coil.
• Remove the ignition coils by unscrewing them.
• Use the spark plug socket to remove old spark plugs.
• Check the gap on new spark plugs using a gap gauge and adjust if necessary.
• Install new spark plugs and torque to manufacturer specifications (typically 13-15 lb-ft).
• Reattach the ignition coils and connectors.

3. Inspect and Replace Ignition Coils (if necessary)

• If any ignition coils show signs of wear or damage during inspection, replace them.
• Remove the faulty coil as described in the previous step.
• Install the new ignition coil and reconnect the electrical connector.

4. Check and Replace Fuel Injectors (if necessary)

• Use a fuel injector cleaning kit to flush out any debris if injectors are clogged.
• If injectors are faulty, remove them using a fuel injector removal tool.
• Install new fuel injectors ensuring O-rings are properly seated.

5. Reassemble and Reconnect Battery

• Reinstall any components removed during the repair.
• Reconnect the negative battery terminal.
• Ensure all tools and parts are accounted for.