1992 Toyota Pickup trying to diagnose engine troubles

Engine Performance problem
1992 Toyota Pickup 4 cyl Two Wheel Drive Manual

I have a 92 pu with the 22re engine. It started miss firing on 2 and 3. The plugs were wet when pulled. I have put 3 sets in it. Each time it ran ok for a while. The last time it didnt help any. I have put new wires, roto button, and dissy cap. It started to lose power and now can barely get out of its own way. It will start fine and run for a couple of seconds then start to lope badly and die. I can keep it running by pushing the accelerator to the floor and holding it. It will run but barely and has no power. The check engine light came on and I pulled the codes. They are 25 and 43.