Cat converter smoking

[slaughterrt]

I did the old SeaFoam treatment this morning.

After running the truck for approx 20 minutes or so, I turned it off. I was still getting a little residual smoke from UNDER the truck. Took a look and there was a bit of smoke coming off the cat converter. Is this something to be concerned about or could this be normal after seafoaming? Or could it be something serious like my cat be close to being clogged? And is it perhaps time for a replacement? I haven't ever replaced it in its 220k miles. How would I go about checking the status of my cat?

 

[VR4]

No cel, no loss of power, leave cat alone.

 

[slaughterrt]

No cel, no loss of power, leave cat alone.

Just took it for about a 10 minute drive and its smoking a little bit again. Dunno if it is residual SeaFoam or what. When should I be concerned? No CEL but I did just do a hard reset when I installed my lights and unhooked my negative battery terminal. No loss of power or other performance that I have noticed. Just a bit of white smoke.