Fuel pump NG
It should have 19# injectors from the factory... They are all 19#/hr injectors. After 1998 the only change in the injectors was the spray pattern. The later model injectors do not flow more, but they do have a better spray pattern.
TBI.... Throttle Body Injection... The Injectors are right there in opening of the throttle body. There are not individual injectors for each cylinder. There 2 or 4 injectors that spray the gas right on top the throttle plate. The entire manifold is filled with the gas/air mixture.
Yes
Fuel pressure fuel injectors ECM and various sensors
hook up a timing light to #1 cal and watch the spray pattern. A smooth conical shape should be present. dripping, or erratic flickering of the spray means fuel isn't being atomized properly.
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.
With engine warmed up, running and air filter assembly removed, notice the fuel spray coming from the injectors. You should see a nice umbrella shaped spray coming from each injector. If the spray is dripping you may have injector problems. Also, the CMFI unit for this motor has a long history of failure, leaking. I have replaced my CMFI unit, twice. Rough idle and a long pressure fill (turning the motor over before it finally pressurizes to start) are the key indicators that the unit is bad.
exhaust will be smoky. exhaust temperature will be high.
In an internal combustion engine, injectors spray atomized fuel into the combustion chamber
the fuel is pumped from the gas tank into the "fuel rail" and the gas stays there until you start turning over the engine to start it. the fuel injectors take the fuel from the "fuel rail" and spray it into the cylinder which then gets ignited by the spark from the spark plug. so if the injector is leaking or not functioning the fuel will just flood into the engine if leaking, or not go into the engine at at all if its not working. the reason they went from carburetors to fuel injection is so less gas is wasted because the injectors only spray a precise amount of fuel.
Electrical impulses from the engine control module (ECM)