my screw that held my rotor button in place came out and jammed in the i guess a cam of some sort in my distrubutor well any ways, it shut my car off, well when it did, i shot out a 30 foot cloud of black smoke (unburnt fuel). the car did a major back fire, well the next day i cranked my car and i heard a bad noise, well i didnt think much of it, and took off for the day. well on the way home the noise got loud and when i went to wendys to get some dinner i was in the drive threw next to the wall and i heard a exchaust leak, the next day when i hade day light i got my car on some ramps and look to see where the noise was coming from hoping that it was just maybe and excaust pipe cam lose at the flange, well no i have a crack right at the welds where my converter is at, now my question is.... could the loud back fire maybe have cause this and it was just so much pressure that it took a weak weld spot out in my exchaust or.... is this maybe due to the weather changing. i just hade the emissions dont and i pass threw out the hole test amazingly. so prier issues was not the answer. please help me figure out this issue.
p.s this is a stock exchaust