I have and 05 lly with 4 inch exhaust BD full bore left intake manifold airaid intake and this morning i took my kids to school about a half mile from house and when i pulled up to the stop light the truck started jerking a little bit and alot of blue smoke was being put out the exhaust but after driving the truck around the block it stop and i couldnt get it to do it again just wondering what it could and if its something i need to fix before it totally gorse out i also use lucas fuel treatment

 

injectors is what it sounds like to me

 

Sounds like a injector was acting up

 

Number eight was bad and number 2 was borderline so i had both replaced and it runs awesome now thinks for the info