'86 FJ60, 2F with *new* rebuilt carb from SOR. Cat is clean as a whistle, but the exhaust has a terrible smell. I'm getting 14.25 MPG's, and it's not smoking at all, so I don't think it's the carb. It idles great, etc. I DO have a leaking exhaust manifold (under the heat shield of carb), and it smells the same way if I stick my head under the hood by the carb (where the leak is). What's the deal? Thanks for your help.