fcdriftingsd

hello, my name is noel and i own a 91986 mazda fc, i had been driving the car fow a while now but the car suddenly started to die out on me and that my throttle response its acting up. I have taken the car to my friend shop but they cant seem to pin poin on what the problem could be, the only thing that they said that they have done is get my timing down, check if im getting air, check my coils to see if im getting spakrs, so those are the things that have been checked out, the only thing that they can think of is that either my fuel injectors are bad and need to replace, and that my BAC valve sensor is not even working becuase unplugging the sensor does not even affect the motor. So if anyone has any idea or had gone through thise B.S plras pl thank tou..