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Now im having more problems with my early 99 psd, sometimes when it shifts to second i loose almost all power and start blowing blueish smoke, let off the gas and get back in it , the truck will regain power and move. Also, if i pull from a light and floor it, it wont lag or smoke, but if i try to pull off slower, its almost like i have to power it up before it shifts or it will lag? Is this a turbo problem, or fuel delivery of some sort?
do all the basics... Check air filter and Fuel filter, then tighten all the IC boots. If the IC boots are loose you can lose boost pressure but I doubt it is that problem if it was your truck would be slow as hell at WOT.