I just got Flowmaster mufflers put on and my Lincoln has 192,000 miles on it. Now today at idel i hear a rattle noise. and i was at a redlight and i revved it up and (white) smoke came out of the exhaust ....... i am wondering is my cat burnt up or is it an engine problem..... the noise sounds like it is from the cat... Please help
BossLSC
BossLSC