bought new gaskets(for Advanced Auto) friday and installed them saturday. drove it and after i got back the header was red hot! the gaskets i put in had a metal band in the center, but the outer part looked to be some cork type material! Did i install the wrong gaskets? I need to figure this out soon, bc it is bothering me!
im voting for running rich. a clogged cat would just bog the engine down. or the cat itself would overheat to the point of a fire hazard. but the manifold wouldnt get that hot. btw- the gasket you installed "metal doughnut" is correct, thats what i get when i need one.
just took of the toolbox and took out some speaker wire someone had for a sub. thats it except the gaskets...
My guess is that additive is causing a very hot burn. Pull the plugs & see what they look like!' And drain the tank!!
id also look at the O2 sensor. could of been with the leak it didnt get hot enuff and got coroded, and now its reading way wrong.
You didn't play with your timing by any chance... that could also cause that manifold to GLOW red hot.
i just bought the truck, but the previous owner had no clue about anything under the hood except changing the oil. So i dought he did. but i'm gonna try to rule out all possible prooblems this weekend. thanks