84 S10 has dead spot when you take off

i have a 84 S10 with a 1.9 in it , when you try to take off it has a dead spot and it doesnt want to stay runnin and no power, i have changed fuel pump,fuel filter,cap&rotor,wires spark plugs does anybody know what is wrong with this thing

i have a 84 S10 with a 1.9 in it , when you try to take off it has a dead spot and it doesnt want to stay runnin and no power, i have changed fuel pump,fuel filter,cap&rotor,wires spark plugs does anybody know what is wrong with this thing


It is going to need some testingto find out.
Fuel pressure?
Is it losing spark or fuel?
Good spark to all plugs?
Any codes?
Jumper pin A&B and count flashes.
Post back.
Codes and fuel pressure and if you have good spark.
What is engine vacuum readings at idle and at 2K RPM?

also forgot to mention when drivin down interstate at 70 runs fine it is just at take off or why you are going slow