hi just bought a cavalier cdx and it seam lumpy and none responsive as any 1 got any ideas wat it could be ? also seam rather smoky ? but i looked for the normal signs of a gone head gasket but there is none present
Is this the Ecotec engine by any chance. If so you probably have the famous throttle body and ICV valve issue. Not a biggy, just takes some time to sort out, just remove them (they are joined and give a thorough cleaning with carb cleaner. There are some threads on here giving some more details.
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