how to know when to replace spark plugs in Toyota RAV4 XA50 (2019-2024)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to avoid electrical shorts.
• Allow the engine to cool down before beginning work.

2. Remove Engine Cover

• Use a socket set to remove any bolts securing the engine cover.
• Carefully lift off the cover and set it aside.

3. Remove Spark Plug Wires or Ignition Coils

• For spark plug wires: Grasp the boot of the wire and pull it straight off the spark plug.
• For ignition coils: Remove the bolts securing the coils, then gently pull the coils straight out.

4. Remove Spark Plugs

• Use a spark plug socket and ratchet to unscrew the old spark plugs from the cylinder head.
• Turn counterclockwise until the plug is free.

5. Inspect and Replace

• Inspect the old spark plugs for wear and deposits. Replace with new spark plugs if necessary.
• Check the new spark plugs for the correct gap and adjust if needed.
• Install the new spark plugs by hand to avoid cross-threading, then tighten to the manufacturer's specified torque (typically around 13-15 ft-lbs for most models).

6. Reinstall Components

• Reattach ignition coils or spark plug wires to their respective plugs.
• Replace the engine cover and secure it with the bolts removed earlier.
• Reconnect the negative battery terminal.