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The other day my exhaust leak through just below the connector for the exhaust manifold. Now it idles rough as all get out. Are the two connected or do I need to look for another issue? The problem arised at the same time but I'm not sure if they are related. Any help would be appreciated.
 

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Is it possible the leak makes the idle sound rough? Fix the leak then see how the idle is.
 

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exhaust leaks will directly affect exhaust velocity , fuel economy, and power and possible idle if the AIV system is now a vacuum leak !
 
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