i have a 81 toyota 4x4 with a 22r with 20R head bored .030 over with a ('92?) corola carberator had a electric choke and a L50 transmission. the problem i am having is that when i start the engine it acts like it wants to stumble and die if you touch the accerlarator after you start it. i thought it was the choke so i replaced it with a manual choke and that solve it when the engine is choked but when i push the choke in the problem returns and the only way to solve it is after i shift gears is to pull on the choke to regain acceleration and to stop the stumbling i fell it might be out of adjustment but i wanted to tap the resources of people wiser than me. the engine also feels under powered in all gears and i wanted to know what could solve that alement.