How to Replace Spark Plugs 06-11 Toyota Camry

Difficulty: Intermediate · About 45 min · Toyota Camry

Replace spark plugs on a 2006–2011 Toyota Camry by disconnecting the battery, removing the coil cover, and working on one cylinder at a time.

Steps

1. Isolate the ignition system

   Switch off the ignition and disconnect the negative battery terminal. Allow the engine to cool fully before removing ignition components or spark plugs.

2. Remove the coil cover and coils

   Remove the engine-cover fasteners and lift the cover away. Unplug one ignition coil at a time, remove its retaining bolt, and pull the coil straight from the plug well.

3. Remove and inspect each plug

   Use a spark-plug socket to loosen the plug and lift it out. Compare it with the correct replacement and check the well for oil, debris, or damage before proceeding.

4. Install the new plugs

   Start each plug by hand to avoid cross-threading. Tighten it to the vehicle specification, then reinstall the coil, bolt, and connector before moving to the next cylinder.

5. Reconnect and verify

   Refit the engine cover and reconnect the negative battery terminal. Start the engine and check for misfire or warning lights, confirming all coil connectors are fully seated.

Check your vehicle’s repair manual for exact specifications and fit.