1987 Dodge Colt Vista 4 Cyl 2.0L
Catalytic converter became red hot and lots of smoke near it even with the engine cool?
Nissan Technical Advisor 10/15/2010
Depending on the input given, your catalytic converter is working hard that indicates unburned fuel in the exhaust which is most likely caused by ignition misfire or a compression leak. Did you try to test the catalytic converter with a vacuum gauge, to determine its working condition? Test and replace it if necessary.