1990 Toyota Pickup Laramie 6 1/4 Ft

Truck has 22r 4 cyl 5spd. I paid 2500 for truck needing engine work. I had engine totally rebuilt, bottom and top. I drove it 150 mile and it started smoking. Mechanic that did work would not back it up. I paid 1500 to rebuild engine. I'm offering the truck for the 2500 I paid for the truck not running. I will loose the 1500. I have not taken it to another mechanic to diagnois the problem. It could be simple it could need rings. I don't know, my lose is your gain.