I've been pretty disappointed with my 1995 diesel pickup. The truck seems to have low power and blows a lot of white smoke when I start it. Also I've noticed it does not want to shift from second to third. The problem seems to be worse when the transmission is cold. When I leave work and going up a slight grade the transmission will not shift. I'm running about 45 mph with the rpm's at about 2500 and blowing the biggest cloud of white smoke. My coworkers laugh and cough as they pass me by in their trucks doing 80 mph. Once I make the turn and start downhill the truck seems to shift a little better but it still does not like to shift from second to third. What do you all think?