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Q: mil light on missfire all rpm what trouble to look for other than plugs has 75k on 2005 Chevrolet Trailblazer

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
no problems up to now
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Plug wires or boots open the hood at night or in the dark. Start the car and see if any spark is going out the side of the wires
yes they are also called boots. If you ck each one and make sure there are no "hot spots" or burn marks on the boot. you will not be able to see them arc
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