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nope. Is your heat shield bolts loose?
 

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sounds like the header-downpipe gasket is no good or the exhaust manifold gasket. Did you use the aftermarket gaskets or the OEM ones?

I bought a set of OEM ones for $20 total for both and never had that issue before. Most aftermarket header gaskets are garbage.
 

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....

How many miles ....recent maintenance, any mods..? Have you tried checking your timing chain tesioner....because thats what it sounds like to me.....if so i would refrain from driving as you run the risk of severely damaging the engine:worried:
 
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