Hey guys It's time for a new truck and I would really really like a turbo diesel, I have heard that they are very reliable engines, with tons of torque in which I would like to get a trailer in the future to pull. This truck would not be modded at all, I don't want to chip it or anything like that, I just want something reliable and smooth running with good driveability. I have looked privately and diesels are expensive here, but there is one that falls in my price range and is in excellent condition. It's a 2001 GMC sierra 2500 duramax diesel 4WD. I did a little research and found that it uses an LB7 duramax engine which is known to have injector issues. I really don't know much about turbo diesels, but I know that injectors for turbo's must support a high PSI. I looked around for a LB7 injector set and found a set of 8 with a price tag of 1700$, and a 500$ core charge. That's a lot of money, but at least I know what I'm getting myself possibly into. Truck has 250000km's, that's about 155 000miles for you americanos. I looked for lower milage but I just can't afford it, too much money. The owner claims that he has reciepts for a rebuilt transfer case and the allison transmission, so I figure if he can prove that I'm pretty much getting a new tranny and transfer case. I will look for the usual suspects of high milage, bearings, u-joints, center bearing (if there is one) and ball joints, but I don't know what to look for in the engine. What kind of quick tests or things should I look out for if I scout this truck out, or any other turbo diesel from GMC (01 or newer)? Looking on youtube I saw some bad injector videos in which there was alot of idle hazing, but others with faulty injectors had no hazing... kinda confused me. What do you guys think as well? Should I stay away? I am mechanically inclined and have read that to replace the injectors you must remove the valve covers and everything that blocks that path. There is a video of it on youtube (fast motion) that shows the job, and I could do it for sure. I've done head work before on my previous chevy, I can handle this. Thing is, if I can see that there is an injector problem, I can use it as a bargaining chip and lower the price to pay for a replacement set. Thanks alot for your time, you guys have helped me HUGE before with my truck and hopefully I'll get some informed opinions and advice this time too!!!