I looked under my car to see why my y-pipe was rattling, turns out I am missing 3 of the six nuts holding it in. I guess we didn't tighten them down good enough, and/or it has something to do with when I ran up on an embankment while sliding on some ice awhile back. I was just wondering if I need to use lock washers under the nut, I can't tell because the current ones are a little rusted. Any help is appreciated.

 

locktite is ur friend

 

just buy a new y-pipe! lyell's is having a sale on their ypipe and it comes with a test pipe. definately worth it, im ordering mine soon.

 

no thanks, there is nothing wrong with it, I just fixed it, and I already have a test pipe.