how to fix Honda Pilot Third Generation (2016-present) engine misfire

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, multimeter, torque wrench, fuel pressure gauge.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Allow the engine to cool down before starting work.

2. Replace Spark Plugs

• Sub-steps:
  1. Remove the engine cover if necessary.
  2. Disconnect the ignition coil connectors.
  3. Remove the ignition coils using a socket set.
  4. Use a spark plug socket to remove the old spark plugs.
  5. Inspect the new spark plugs for correct gap settings according to manufacturer specifications and install.
  6. Reinstall the ignition coils and reconnect the connectors.

3. Test and Replace Ignition Coils (if needed)

• Sub-steps:
  1. Use a multimeter to check resistance on each ignition coil (should be within manufacturer specifications).
  2. If a coil is faulty, remove it and replace it with a new one.
  3. Reinstall all components and reconnect the battery.

4. Inspect and Replace Fuel Injectors (if necessary)

• Sub-steps:
  1. Disconnect the fuel lines and electrical connectors from the fuel injectors.
  2. Remove the fuel rail and injectors from the intake manifold.
  3. Inspect injectors for clogs or leaks; replace if necessary.
  4. Reinstall the injectors and fuel rail, ensuring all connections are tight.

5. Check for Vacuum Leaks

• Sub-steps:
  1. Inspect all vacuum hoses for cracks or disconnections.
  2. Use a smoke machine or carburetor cleaner to detect leaks around the intake manifold.
  3. Replace any damaged hoses or seals.

6. Verify Cylinder Compression

• Sub-steps:
  1. Remove spark plugs and disable fuel injection.
  2. Use a compression gauge to check the compression in each cylinder.
  3. If compression is low, further investigation into engine internals may be needed.