kenworth w900l suddenly really noisy

Ok thank you thank you..went underneath her and bingo you can see where they took the clamp off to remove the pipe. Looks like they put the clamp back on in a different place and the pipe had broken thro...bit old and weak I guess. Anyway all good my minds at rest and I can get it fixed asap.
On another note was very handy education from you guys thank you and I also found amother little black soot site on the Y pipe so will take care of that. Learning as I go...thanks from a chick driver

 

Ha yes it is and lol I get the reference

 

Lol the days of our youth