First off I drive a 98 Blazer 4x4 4.3 AUTO

ok now that we have tha part out the way, i had a shop replace the motor but they never finished it and i had to steal my vehicle back from them. they had multiple vacuum hoses unhooked but the truck was "driveable" and didnt smoke. I hooked up all the vacuum hoses and reset the dizzy and now it smokes but "seems" to run smooth. The check engine light it is throwing is a Crankshaft Pos. Sensor which i have replaced twice. i am thinking that the vaccum may be off causeing the smoke....specifically the vacuum hose from the drivers side valce cover. I am in need of a visual vacuum diagram and a pic to help me out here im close to having everything tied up. Thanks for your help in advance