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Re: Now I'm desperate and really need help
P302 indicates a misfire on cylinder #2. You stated you changed the plugs but what about the wires? The wires contribute to misfires as much as plugs. Also you didn't mention the engine size. Change the wires, if it is a 4 cyl change the plug connectors. This should eliminate the misfire. If not then the next step will be the coil or the fuel injector.
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