Toyota 90919-01210 Plug, Spark

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Spark plug replacement requires a spark plug socket, extension, and ratchet. The socket should be lined with a rubber grommet to protect the porcelain insulator of the spark plug and hold it in place during insertion. A wire-type feeler gauge is needed to check and adjust the spark plug gap, while a torque wrench is necessary to tighten the new plugs to the specified torque. When purchasing new spark plugs, it is crucial to obtain the correct ones for your specific vehicle, which can be found in the vehicle's emissions control information label or owner's manual. Inspect the new plugs for any defects, such as cracks in the porcelain insulator, and check the electrode gaps using a wire gauge. If the gap is incorrect, adjust it using the notched adjuster on the feeler gauge body. Platinum and iridium spark plugs usually come pre-gapped and should not be adjusted. To remove the spark plugs, use a socket with a long extension. Before installation, apply a coat of anti-seize compound to the plug threads to prevent cross-threading. Use a short piece of rubber hose to help align the plug with the plug hole and prevent thread damage. Attach the coil or spark plug wire to the new spark plug using a twisting motion until it is firmly seated. Repeat the process for the remaining spark plugs, replacing them one at a time to avoid mixing up the coils.

You can choose the correct spark plugs based on specifications, the VECI label under the hood, or the owner manual.

Remove the retaining bolt, disconnect the electrical connector, and detach the individual coils.

Remove the three 5-mm cap nuts and detach the cover.

You should use a spark plug socket with a rubber grommet to protect the porcelain insulator.

Spark plug replacement for four-cylinder PZEV models requires a spark plug socket with a rubber grommet, a wire-type feeler gauge, and a torque wrench. When replacing the plugs, ensure they are iridium-tipped and adjust them to the proper gap. Check for defects in the new plugs and do not adjust the gap on iridium spark plugs. Remove the engine cover(s) and disconnect any interfering hoses or components. Detach each ignition coil assembly from the spark plugs, working on one plug at a time. Use compressed air or a bicycle pump to remove dirt or foreign material. Remove the spark plug using the appropriate socket and extension. Compare the old plugs to determine the engine's running condition. Apply anti-seize compound to the spark plug threads and use a piece of rubber hose to aid in insertion. Attach the ignition coil assembly to the new plug. Repeat the process for the remaining spark plugs, replacing them one at a time to avoid mixing up the wires.

Use the notched adjuster on the wire-type feeler gauge to adjust the gap if necessary.

Use a twisting motion on the boot until it is firmly seated on the end of the spark plug.

Replace the spark plugs one at a time to avoid mixing up the wires.