Intermittent misfire and lean fuel - Chevy Impala Forums
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Intermittent misfire and lean fuel

I have an 09 impala ls. The check engine light came on the other day and I had the auto store run my codes. He said it's an intermittent misfire and lean fuel. Which I assume go hand n hand with each other.

What could be causing my fuel to lean out and have a misfire?

I do have an exhaust leak but I'm not sure where, I haven't had a chance to look since the weather up here hasn't been good enough to dry out my muddy driveway.. Could an exhaust leak cause this? Or what could be the cause?
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