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Q: How to change spark plugs on V6 model on 2003 Toyota Highlander

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
120,000 miles recommended service calls for change of spark plugs
The intake plenum (upper portion of intake manifold) has to be removed to gain access to spark plugs on right side of engine (towards firewall) ;
You need lots of patience and be careful with all the connectors and small coolant hoses under it,it is fairly easy but takes time(labor time). Good luck, hope this info helps...
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