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I went to my machanic and he removed a coil pack and then replaced it with a new one and the problem whent away FOR A WHILE. Once it started sputtering again I replaced the other two coil packs. The problem whent away again (I THINK) now the problem with sputtering only happens when i am going up a hill and only during accelleration.

MY first thought was BAD GAS...second NOT ENOUGH GAS IN THE TANK...and Last FUEL SYSTEM needs to be cleaned. This car has 80,000 miles and runs perfect I just cant find why the sputtering is so intermittent.

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Q: What causes a 1993 Buick century to run rough and sputter?
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