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You say that the spark plugs are fine, however, have you replaced the wires? A car can run good when idling or cruising but when you accelerate it puts a load on the spark plug wires which if one (or more) of them have started breaking down it will cause sputtering and/or a miss in the engine. Liek someoneless wrote, start with changing the plug wires (cheap and easy to do it yourself)... next check change the fuel filter and then check the fuel pump pressure... it may have enough pressure to keep up to an idle but not enough for aceleration

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19y ago

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