W t f ...?
5.2? oR THE 5.9? Have you put a PCV valve in recently? Pull it and take a peek at it.
post a vid, i wanna hear it...LOL
does it sound like a piston is missing (firing - not lost) or irregular in idling or revving...?
ASC (Auto Services Company Inc) has the warranty.Who is the warranty through LJ? I deal with them on a daily basis