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My car started shaking the other day. Did not notice it at first, but became bad enough I turned around and went home for another vehicle as the check engine light also came on. We changes all of the spark plugs because we thought maybe it is misfiring. One plug was burned, but all the rest were fine. We did a compression test where the fouled plug was and it was 120 just as was another. We think it has the original spark plug wires and wondering if that could be the trouble or if we are on the wrong tract all together and the shaking has nothing to do with plus and wires. The check engine light came on before the spark plug change, but not since. It only shakes a small amount when in park, but gets much much worse in drive. Any suggestions are very helpful. Thanks A Million!!!