Toyota 90919-01217 Plug, Spark

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Spark plug maintenance is key for engine efficiency. Use plugs specified in the Vehicle Emissions Control Information label or Owner's Handbook. If the engine is in good condition, spark plugs usually don't need attention between scheduled maintenance. To replace, remove the ignition coils in vehicles with a direct ignition system. Accessing the deeply recessed plugs requires a 16 mm spark plug socket and extension bar. Check each plug's condition upon removal. The electrode gap is crucial and should be set to the specified value. Before installing, ensure the plug's connector sleeves are tight and clean. Tighten the plugs to the specified torque with a torque wrench and spark plug socket, then refit the ignition coils and air cleaner.

In order to replace the spark plug you need a spark plug socket, and torque wrench and you should also buy the right plugs for your car and adjust to the correct gap. Check new plugs for defects and electrode gaps. Remove ignition coils and clean any dirt. Use a spark plug socket to remove old plugs and compare them to a chart to assess engine condition.

Repeat the process for the remaining spark plugs.

You will need a spark plug socket with a rubber grommet, a wire-type feeler gauge, and a torque wrench.