how to address the P0302 code in my Ford F-150 Fourteenth Generation (2021-present)

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Socket set, torque wrench.
• Remove the ignition coil for cylinder 2 by unbolting and disconnecting the electrical connector.
• Extract the spark plug using a spark plug socket and inspect for wear or carbon buildup.
• Replace the spark plug with a new one, ensuring it is gapped according to manufacturer specifications (typically around 0.054 inches for Ford F-150).
• Reinstall the ignition coil and secure it with the appropriate torque (usually 10-15 ft-lbs).

3. Inspect and Replace Ignition Coil

• If the spark plug is in good condition, check the ignition coil.
• Remove the ignition coil from cylinder 2 and test it with a multimeter to ensure it's within resistance specifications.
• If defective, replace the ignition coil with a new one.
• Reconnect the coil and ensure it is securely fastened.

4. Check Fuel Injector

• Tools Required: Noid light or multimeter.
• Disconnect the fuel injector connector and use a noid light to check for pulse while cranking the engine.
• If there is no pulse, inspect the wiring for damage; if the wiring is intact, replace the fuel injector.
• Reconnect the fuel injector and its connector securely.

5. Perform Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 2.
• Insert the compression tester into the spark plug hole and crank the engine.
• Record the reading and compare it to specifications (typically should be around 120-150 psi).
• If the compression is low, further investigation into the engine internals (valves, piston rings) may be needed.