Engine Vibrates had it checked on a small computer all 4 plugs were burned up. They were replaced. It gave it more power but it still has the vibration and is louder then usual. The engine light blinks. 2005 Chevy Caviler
sounds like worn engine mounts. Have the codes pulled at autozone. Check engine light has a lot of possibilities.
you may have done more damage by letting the plugs get that bad becides mounts. you my need a full tune up (wires, o2 sensor, ignition module, etc.
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