I have a 93 s10 and my truck started bucking and jerking real bad. THe oil pressure drops and if I dont give it gas it dies. The TBI is getting fuel. I replaced the fuel pump 3 months ago so I know that's not it. Could it be wires. I replaced the plugs about 3000 miles ago. It also throws a code for the EGR and MAP sensors? Smoke also comes out from under the engine with a strong smell. Any ideas? Thanks

2.8 engine w/ 5spd trans

 

check the post on "truck runs crapy" for some suggestions on where else u could look for the root of your problem. good luck.