why does my Honda Pilot YF3 (2016-2022) engine misfire at idle

Solution

1. Preparation

• Gather tools: OBD-II scanner, socket set, multimeter, torque wrench, fuel injector tester.
• Safety: Disconnect the battery before starting any work and allow the engine to cool.

2. Replace Spark Plugs

• Remove the engine cover if applicable.
• Disconnect ignition coil connectors.
• Remove the ignition coils using a socket set.
• Unscrew and remove the spark plugs with a spark plug socket.
• Install new spark plugs according to the manufacturer’s specifications (check gap settings).
• Reinstall ignition coils and reconnect connectors.

3. Test/Replace Ignition Coils

• Use a multimeter to check the resistance of each ignition coil.
• If any coils are faulty, remove and replace them with new ones.
• Ensure that the new coils are securely mounted and connected.

4. Clean or Replace Fuel Injectors

• If testing indicates injector issues, remove the fuel rail.
• Clean the fuel injectors using a specialized cleaner or replace them if damaged.
• Reinstall the fuel rail and reattach fuel lines ensuring no leaks.

5. Inspect and Repair Vacuum Leaks

• Check all vacuum hoses connected to the intake manifold for cracks or disconnections.
• Replace any damaged hoses and ensure all connections are tight.

6. Reconnect Battery and Clear Codes

• Reconnect the battery.
• Use the OBD-II scanner to clear any diagnostic trouble codes (DTCs).