#1
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My 2011 hemi sounds like there is a exhaust leak somewhere. Has there been any problems with other trucks..
#2
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Broken exhaust manifold studs are common. With the engine cold, tug on the heat shields around the manifolds. Any looseness indicates a broken stud.
#3
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I'd also suggest a leak at the manifold; I've never heard of any leaks in the rest of the system on a 4th gen.
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