Check your wiring. It sounds like you cut a wire and it's grounding the injectors out at all times. The injectors have 12v supplied to them from the ignition switch and depend upon a ground to power the unit. If you cut the ground wire you end up with fuel flowing all the time. Funny thing is that they fire one at a time instead of all 8 at once. The only other thing I can think of is that your fuel pressure regulator has failed and now the injectors are getting about 80lbs of fuel pressure and bleeding the fuel out the injector..