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code p0302

  1. Rough idle

    New Members Area
    I have a 2009 smart coupe and it is rough on idle - but when I slightly step on the gas it run smooth. The engine light is on - gives me a code P0302 cylinder # 2 misfire. I change the plugs and change the ignition coil. The code reappear after reset. If I clear the code and take the car for...
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