HI there,
Excessive exhaust noise will be due to part of the exhaust system failing due to rust, the car will have to go on a hoist and have the entire exhaust system inspected, you can also get internal baffles collapsing with in the muffler causing excessive noise as well as missing manifold bolts crack manifold & blown manifold gasket, all these can be inspected quickly on a hoist, your mechanic will be able to advise on what parts need replacing.
Mark (mhpautos)
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Tuesday, July 13th, 2010 AT 11:35 PM