Mayt, I own a 94 GMC with the 6.5 turbo and wouldnt take anything for it. I have had some problems with it over the years but what your describing sounds to me like (from experience) your muffler and catalytic convertor are stopping up. At 300,000 miles i had to have mine removed and am running it now without either, just a straight pipe, and its very little louder than before. Once i discovered they were stopped up the diesel mechanic told me that gm had a lot of problems with this and stopped installing the catalytic convertor on their diesels after 95. Mine has more power now than when it was new. All ive done to it mechanically is to put ALL new berings in it and change the driver box on the injector pump a couple of times. I did buy a heat sink and install the driver box on top of the manifold so it (driver box) would run cooler. It now has almost 340,000 and is still running better than new. You will have to change the lift pump every couple of years but to me thats kinda like changing the fuel filters.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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