why does my Toyota RAV4 Fourth Generation (2013-2018) feel like it's misfiring

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shocks.
• Allow the engine to cool before proceeding.

2. Inspect and Replace Spark Plugs

• Remove the ignition coils by unscrewing the retaining bolts and disconnecting the electrical connectors.
• Extract the spark plugs using a spark plug socket and ratchet.
• Inspect the spark plugs for wear and replace with new ones if necessary (OEM recommended).
  • Torque the new spark plugs to 13 lb-ft.

3. Check and Replace Ignition Coils

• Test the ignition coils using a multimeter; replace any that show resistance outside the normal range.
• Install new ignition coils onto the spark plugs and reconnect the electrical connectors.
  • Ensure they are seated properly.

4. Clean or Replace Fuel Injectors

• Remove the fuel rail by loosening the bolts and disconnecting any wiring or hoses.
• Use a fuel injector cleaning kit to clean the injectors or replace them if clogged.
• Reinstall the fuel rail, ensuring all connections are secure.

5. Inspect Air Intake System

• Check the air filter for dirt and replace if necessary.
• Inspect the intake manifold for cracks or loose connections.
• Reassemble any components removed during inspection.

6. Reconnect Battery and Clear Codes

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