The spark plugs are located underneath the four black rubber plugs visible on the top of the engine valve cover. When you open the hood, there will be a black plastic box with four short black rubber...
First, if you would like to do simple repairs I recommend buying a Haynes Manual for about twenty bucks. They are handy, they have pictures andt tell you alot of things about your car.
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The intrepids have Coil on plug engines so the coil the square box looking thing with two screws and a wire harness. you take the two screws off lift it straight up and the spark plug boot is...