how to fix P0301 misfire code in Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather the necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.

2. Replace Spark Plug

• Tools Required: Socket set, torque wrench, spark plug socket.
• Remove the ignition coil from cylinder 1 by unscrewing bolts and disconnecting the electrical connector.
• Use a spark plug socket to remove the old spark plug.
• Inspect the spark plug for wear (carbon build-up, electrode wear) and replace it with a new one.
• Tighten the new spark plug to the manufacturer’s specifications (typically 13-15 lb-ft).

3. Inspect and Replace Ignition Coil

• Tools Required: Socket set.
• Evaluate the ignition coil from cylinder 1. If issues are suspected, replace it with a new part.
• Ensure proper seating and secure the ignition coil with bolts.

4. Clean or Replace Fuel Injector

• Tools Required: Fuel injector cleaning kit or replacement injectors.
• If the injector is clogged, use a cleaning kit to clean it according to the manufacturer’s instructions.
• If it is faulty, remove the old injector and install a new one, ensuring proper O-ring alignment.

5. Conduct Compression Test

• Tools Required: Compression tester.
• Remove the spark plug from cylinder 1 and connect the compression tester.
• Crank the engine and record the compression reading; it should meet the manufacturer’s specifications (typically around 120-160 psi).
• If compression is low, further investigation into the engine internals may be necessary.