Today I changed the sparkplugs on my 2006 Toyota Corolla LE with 95,600 miles. I used Genuine Toyota Parts. The old plugs were the originals.
To change the plugs first remove the engine cover with a 10mm socket and removing two retaining clips. All harware removed is 10mm
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Then disconnect the negative battery terminal
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I numbered the four coils with a white Sharpie paint marker.
Here are the plugs and the 5/8” plug socket with 10” wobble extension. With this tool no way you can loose the socket inside the cylinder and have a disaster. Also it grips the plug with a strong magnet.
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Lift the tab with a hook and unplug the wiring connector from the four coils. They unplug quite easily.
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Remove the 10mm bolts that attach the coils to the cylinder head then remove the coils and set aside. The first two came out easily but #3 and #4 coils were quite difficult to remove. I sprayed those two with silicone lubricant to loosen the rubber boots, and after a few minutes both came out easily.
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The plugs themselves came out quite easily and it was easy to install the four new plugs.
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After that it was easy to reattach the coils. I was glad I had numbered them. They were super easy to put on the new plugs and reinstall the mounting bolts. Then I reattached the negative battery terminal.
With the engine cover off the last time when I had changed the PCV valve a week ago I noticed a bit of greasy dirt around the base of the oil filler tube. Today I replaced the filler cap gasket too with the Toyota part. I had to put it in a vice and use two picks to slowly worm out the old oil filler gasket away from the filler cap. The new one went in easily.
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It was overall an easy job. I took it for a 20 mile test drive.