Question about 1999 Oldsmobile Alero

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My 1999 alero sounds the engine is misfiring

The car when accelerating, sputters like it is misfiring.
at my oil change, new spark plugs were put in and the problem continued. At home, I tried putting my 2000 spark plug cover on it and it ran fine. What is that cover about and what could be wrong? tks

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2.4 liter OHC coil housings have this as a common failure. Thery arc over internally to another cylinder and cause the misfire.

Posted on Dec 27, 2008

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