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Showing results for tags 'manifold leaks'.
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My 47 DeSoto is very loud, sounding like a blown muffler. But the noise is coming from the engine compartment, more from the manifold side. I could feel no leaks at the exhaust pipe flange, or anywhere else where I could safely put my hand. I'm thinking (dangerous territory), if I could make the engine smoke, I could see where the leak is, at least generally. I have a set of manifold gaskets coming, figuring that I would remove the manifolds. Questions: Has anyone had noisy manifolds, and what was the cause and remedy? Would smoke generation work? Would, SeaFoam be a likely agent to make the smoke?
