I have a '93 mercury tracer. The car failed the emissions test last week, so my mechanic replaced the catalytic converter, clean some sensor and added some chemicals into the fuel tank. After his intervention, my car passed the inspection.
Two days later, 5 minutes after I started driving on the road, my engine cought fire.
If you could help me find out what happened.
I saw my mechanic replacing my cat. Converter with a different second hand one, wich was bigger and it had a different shape. I'm positive it was not the right one for my car.