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go back and check each plug gap, put the gap at .44. check to see if all plug are screwed in all the way (especially back plugs), check the plug wire is completely down on the plug (especially on the back plugs). shaking could be bad wire, misfire, leaking vaccumm lines. if you don't have a code scranner, go to auto zone and get code read out. they do it free.

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16y ago

What else can I help you with?