what causes Honda Pilot YF3 (2016-2022) engine misfire and how to fix it

Solution

1. Preparation

• Gather necessary tools and parts.
• 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: Socket set, torque wrench, spark plug socket, anti-seize compound.
• Remove the ignition coil from the affected cylinder.
• Use a spark plug socket to remove the old spark plug. Inspect it for damage or fouling.
• Apply anti-seize compound to the threads of the new spark plug.
• Install the new spark plug and torque it to the manufacturer's specification (typically 13-16 lb-ft).
• Reinstall the ignition coil securely.

3. Test and Replace Ignition Coils (if necessary)

• Tools Required: Multimeter (for testing), socket set.
• Disconnect the ignition coil connector and remove the ignition coil.
• Use a multimeter to check the resistance; if outside the specified range, replace the coil.
• Install the new ignition coil and reconnect the connector.

4. Inspect and Clean Fuel Injectors

• Tools Required: Fuel injector cleaner, specialized fuel injector removal tool.
• Remove the fuel rail and injectors according to the service manual.
• Clean the injectors using a fuel injector cleaning kit or replace them if they are faulty.
• Reinstall the injectors and fuel rail, ensuring proper seals are used.

5. Check Compression (if misfire persists)

• Tools Required: Compression tester.
• Remove the spark plugs and insert the compression tester into the cylinder.
• Crank the engine and note the pressure reading; compare to manufacturer specifications.
• If readings are low, further investigation may be needed for internal engine issues.