The last two weeks my truck has been blowing blue smoke when I'm stopped at stop lights (at least this is when I notice it). Basically it will blow clouds of blue smoke for a few seconds, and then it will stop for 15 or 20 seconds. then it will start smoking again. I can not see or smell any diesel in the oil. So is the general consensus I have an injector going bad? Could this be caused by bad fuel? The truck still runs great and I am getting good MPG.
You could also find somebody in you area with a techII, predator, quad stealth II, PPE, EFI Live to check the balance rates. if you really want to try some ideas throw in some 2 stroke oil when u fill up about one oz to one gallon ratio.
Your #8 injector is still within spec but getting close to being out. BTW- dont check your balance rates in park. The figures will lie to you. The first thing you need to check here before spending a bunch of time and money on hard parts is to check your PCV system. If its plugged or restricted you will get smoke at idle.