hey this is a video overview of the spark plug replacement on the 2003- 2007 Toyota sienna minivan. this is a job where the upper intake plenum needs to be removed in order to remove the rear coil on plug assemblies and spark plugs themselves

the coils do not need to be replaced unless there is a issue with them ( if you have oil on them , then there is a common issue on the valve cover gaskets on this type of cylinder head . where the spark plug tube oil ring gets a leak and oil seeps into the spark plug boot and plug itself and cause a misfire . so if oil is present this is a great time to address that issue. )

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