need help

got an 85 k10 blazer and it doesnt acclarate right. dont now the problem it like it sluggish. dont know if timing off or what. i ve put new plugs.:smokin:

Try a full tuneup, less of course the plugs.

Wires, cap, rotor, check or replace PVC, check timing, air filter, ect

edit, check the plug gap as well