you have coils atop each plug. no typical plug wires. it's a hemi. so they are buried under covers along the center line of the rocker/cam cover atop the engine.
the management system on this should tell you exactly which plug or cylinder is an issue. so if you're just changing them all for what ever reason, DON'T do it.
none of this should need to be done. there is no maint schedule for that. if you have an issue, best to take it to an ASE shop or the dealer for diagnosis as a simple spark plug is likely not your issue.
from what i see in the manual, if i'm correct, this engine has VVT (variable valve timing). far more things can cause poor performance and mileage than on a typical earlier, non-VVT engine. it is not easy for even a good, but not familiar mechanic, to diagnose issues on this.
and i'd be one of them on this platform. i know just enough to know it's not that simple.
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2005 toyota corolla plugs & wires?
Linear Mode
