my Ford F-150 Fourteenth Generation (2021-present) has a check engine light with code P0301, what sh...

Solution

1. Preparation

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

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the ignition coil from cylinder 1 by unscrewing the retaining bolts.
• Carefully pull out the spark plug using a spark plug socket.
• Inspect the spark plug for wear, carbon buildup, or damage.
• If necessary, replace the spark plug with a new one, ensuring it matches OEM specifications.
• Torque the new spark plug to the manufacturer’s specifications (typically around 13-15 lb-ft).

3. Check and Replace Ignition Coil

• Tools Required: Ratchet, socket set.
• After removing the spark plug, inspect the ignition coil for cracks or corrosion.
• If the ignition coil is faulty, disconnect the electrical connector and remove the coil from the cylinder head.
• Install the new ignition coil by securing it in place and reconnecting the electrical connector.

4. Inspect and Clean Fuel Injector

• Tools Required: Fuel injector cleaner kit, safety goggles, gloves.
• Locate the fuel injector for cylinder 1 and disconnect the fuel line with appropriate safety measures.
• Use a fuel injector cleaning kit to clean the injector or replace it if it's clogged.
• Reconnect the fuel line and ensure there are no leaks.

5. Verify Compression

• Tools Required: Compression tester.
• Remove the spark plug again for cylinder 1.
• Insert the compression tester into the spark plug hole and crank the engine.
• Compare the compression reading with manufacturer specifications (usually around 120-150 psi).
• If compression is low, further investigation of the engine internals may be required.