Re: Exhaust smell in cabin, '06 XLT V6
I finally got around to removing the rear exhaust manifold as a process of removing a bad automatic transmission, which I have posted about elsewhere in this forum. Some of you know that to remove the transmission you have to remove the transfer case, and to remove the transfer case you have to remove the rear exhaust manifold, etc., etc. When I removed one of the six exhaust manifold nuts, the stud came with it. It appears that that cylinder was leaking because of the loose stud, and that is where the exhaust was probably escaping. Furthermore, the original exhaust manifold gasket is metal - not a great sealing gasket.
My questions are, would it be OK to put stud adhesive on the removed exhaust manifold stud to prevent it from loosening again? Also, is it OK to coat the new gasket in either that spray gasket adhesive, or a silicone sealing type adhesive? The replacement gaskets (Fel-Pro, etc.) all seem to have a composition design that isn't all metal.