The fuel pressure regulator in that 96 GMC 4.3 TBI is located in the throttle body.
yes, yes it does no, its the crappy tbi systems. tbi stands for THROTTLE BODY INJECTION! it has fuel injectors and has to be treated as such. it is not carbureted.
the larger (3/8) line coming to the tbi is the supply the smaller (5/16) line is the return
9 to 13 LBS. No lower are higher.
Could be starter.
i dont know what is wrong with it . it gets fuel to the tbi but it wont spray through the injectors at all I had an 88' Silverado that did it too. I replaced both injectors on the TBI and it worked fine. The injectors cost me about 50 bucks each.
I would put a ignition module in the distributor, That will probley fix it.
the ignition module or injector fuse
It is probably the fuel pressure regulator.some times it is something elts but who knows what that is
TBI didn't have one, you have to tap into the fuel line at the fuel filter with adapters to attach a pressure gauge. CFI has a test port in the fuel line on top, in back of the engine.
It don't have 1. You will have to splice into the fuel line fitting at the back of the TBI housing.
tbi(throttle body injection) is not used on the 99' sonoma 2.2