An exhaust leak may develop in front of the catalytic converter. This type of leak should be corrected as soon a possible to avoid damaging the catalytic converter.Google+
Car Problem Reports
Lincoln Mark VIII Exhaust Leak Prior to Catalytic Converter Must be Repaired Immediately
Lincoln Mark VIII Problem
The catalytic converter was damaged by long semi-rigid aluminum rectangular prism shaped gutters that fell off a truck and onto the road ahead of me just as my mark viii was there to run over them causing the cc to be crumpled by the drive shaft against its guard. So now the engine really sounds rough because there is no muffler effect to suppress the engine noise. Now I have a smog problem. I should have fixed it long ago but I have inherited a champagne car maintenance expense with only a beer bike budget. It's a wonder this car has made it this far but I can't help but admire this car because I respect the philosophy behind its design and performance.