That's kind of what I've started thinking but I don't know for sure. I'm not sure whats throwing it off.

 

maybe ur 02 censors in your cat need to be replace, that'll make you run a lil rich

 

Replaced the o2 sensor and cat about a month or two ago and replaced the rear o2 sensor with a o2 simm about a week ago.

 

Feeding your truck beans?

 

I woundnt worry about it to much if it was something major it would get worse day by day top the oil off and check it in a week or two.

 

Does it look like this? Skip ahead to about 4:05 to see it smoke.
http://www.youtube.com/watch?v=sSsQv_rINTc

the truck in that video is LASTRIGHT's.
https://dodgeforum.com/forum/members/71028-lastrights.html

not sure about the blue neon lights in the cab. but the exhaust sounds decent.

 

mine does the same thing. let idol a while then hit the gas and it puffs smoke for a couple of seconds. it's the valve seals. cant complain tho, got 365000 thousand miles on it.

tom

 

valve seals?

Time for some new heads baby!!!

 

yup,valve seals. replacing the heads will do the same but cost more. i will agree that the guides are probably worn and heads will be necessary some day. cost very little for seals. of coarse if these new engines don't have seals anymore then i guess i'm wrong.