what are the symptoms of a P0301 code on Ford F-150 13th Generation (2015-2020)?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool if it has been running.

2. Inspect and Replace Spark Plug

• Remove the ignition coil from cylinder 1 using a socket set.
• Take out the spark plug from cylinder 1 using a spark plug socket.
• Inspect the spark plug for wear. Replace if necessary with a new spark plug (OEM recommended).
• Reinstall the spark plug and ignition coil, ensuring they are torqued to specifications (typically 15 lb-ft for spark plugs).

3. Check and Replace Ignition Coil

• If the spark plug is in good condition, test the ignition coil using a multimeter.
• If it is faulty, remove the ignition coil and replace it with a new one (OEM recommended).
• Reinstall the ignition coil and connect the wiring harness.

4. Inspect Fuel Injector

• Remove the fuel injector from cylinder 1.
• Inspect for clogs or damage. If faulty, replace the fuel injector with an OEM part.
• Reinstall the fuel injector and ensure it is properly seated.

5. Compression Test

• If misfire persists, perform a compression test on cylinder 1.
• If compression is low, further investigation into mechanical issues such as valve seating or head gasket integrity is required.

6. Verify Engine Timing

• If previous steps do not resolve the issue, check the engine timing using a timing light or reference the timing chain/belt position.
• Adjust timing if it is found to be out of specification.