[QUOTE=c.captain;143476]thank you very kindly for this advice friend…it is what I am hoping to get and certainly will be checking all the above before taking out injectors. Save for head gaskets blowing when the 6.0l’s are abused, I believe the majority of their weaknesses lay in the peripheral equipment like the turbo and coolers. I believe the turbo is spooling up correctly but not certain. How noisy are they an the 6.0l because I would say that the one on the truck I am buying was pretty quiet?
Tell me about your Western Star…got the 8v71 in it? I was interested in one once with a crane on it, but it sold before I could go check it out.[/QUOTE]
No man, my truck is way newer than the 8v71 era, though you are right in guessing Detroit and for that I am highly impressed. It’s a 2001 Western Star 4963ex that me and a couple of guys from my neighborhood got to together on to make something really cool. It’s got a 76 inch sleeper (fairly standard) with a 13 spd and 14l series 60 detroit. We put on all kinds of lights on it along with the most bad ass moose catcher you could ever imagine. One of the guys hauls cattle with it and I mostly run flats. Cattle is just way too complicated for me and since I know somebody at a flatbed outfit, that’s what I do.
However, back to your problem: I really doubt there is an injector problem. With one injector stuck in the closed or mostly closed position, you should notice a misfire type of thing. If it’s stuck in the open or mostly open position, you should notice really shitty mpg and maybe even black smoke, depending on what kind of emissions crap you have in the exhaust. If you don’t know what a misfire sounds like, pull the spark off of any v8. As far as the turbos on the 6.0s and their nose, i’m not sure. I’ve known a few guys who have had them and never really noticed them. Turbos on a truck are not like turbos on a boat in that you cannot get a direct measurement of their speed. Instead you have to rely on an indirect measurement which is normally the manifold pressure. The only way to obtain the manifold airpressure is from a direct reading or from the OBD2 port. Normal scan tools at places like Advanced Auto do not show live and freeze frame data. For this you need expensive scan tools from OTC or Snap On which can cost up to a few thousand dollars.
What I’m saying is try to find other 6.0 diesels that are running well and memorize the way they sound, especially the turbo. If that is not possible, then you need to somehow acquire a scan tool so you can see what the the manifold pressure is. These scan tools are thousands of dollars so if you don’t know anybody then don’t bother.