Re: 2003 4.6 intake manifold gasket
I answered you before., but I didn't see anything about a misfire. Either the manifold or the gasket is leaking. You can get it pressure tested to see if you can see where it's coming from. Another way is to wipe it down as best you can, then give it a light dusting of talc and see if you can pick up where the leak is originating.
Chewing on asphalt and drinking dinosaur wine