Hi I'm new to the forum I am having a problem with my 06 lbz I thought maybe something you can help I was driving my truck the other day and all the sudden I hear a loud pop that sounds like a misfire come from under my hood-after It did this the truck begin to runs sluggish if I give it more acceleration it would blow Blacksmoke and not want to run I change the fuel filter and test drove the truck at first it ran fine but after about five or 10 minutes It did the same thing any suggestions thanks The only etc on the truck is for a glow plug and I get a p003a from time to time