why does my Honda Pilot Third Generation (2016-present) engine misfire when idling

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Replace Spark Plugs

• Remove the ignition coil covers using a socket set.
• Unplug the ignition coils and remove them.
• Remove the old spark plugs using a spark plug socket.
• Inspect the gap on new spark plugs and adjust if necessary (gap should be within manufacturer specifications).
• Install new spark plugs and torque them to the specified value (typically around 13-16 lb-ft).
• Reinstall the ignition coils and reconnect them.

3. Check and Test Ignition Coils

• Remove ignition coils one at a time and test with a multimeter for primary and secondary resistance.
• Replace any coils that are out of specification as per the manufacturer’s guidelines.
• Ensure the connectors are clean and secure.

4. Clean or Replace Fuel Injectors

• If injectors are clogged, use a fuel injector cleaning kit to clean them thoroughly.
• If cleaning does not resolve the issue, replace the fuel injectors with OEM parts.
• Ensure that O-rings are replaced during injector installation to prevent leaks.

5. Inspect Air Intake System

• Visually check for any cracks or disconnections in the intake hoses.
• Use a smoke machine to detect vacuum leaks if necessary.
• Replace any damaged hoses or gaskets.

6. Measure Fuel Pressure

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the "ON" position (without starting the engine) to check the pressure.
• Compare the readings to the manufacturer's specifications (typically 40-50 psi for the Honda Pilot).
• Repair any issues found in the fuel delivery system (e.g., replace the fuel pump if pressure is low).