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take a few minutes and checkk youe plug wires to seee if one is arcing to an alternative ground makiong your car fire on all cylinders other than that one also spray carb cleaner around intake thrttle body and etc if the motor rpms increase then you have a vac leak

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Q: What could be the reason for a warm engine to have a low rough idle on a 2003 Toyota Tacoma 2.7?
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