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      12-30-2012, 12:43 PM   #6
Jeff@TopGearSolutions
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I think it's an injector too. I dont think the imbalance is enough to throw a code. Sometimes it throws the mixture code, other time you get a rough idle and misfire at idle.

Swapping injectors 3-4 or 3-2 would be the easiest diagnosis since there are no codes at this juncture.