hey and thanks for looking. im working on an 87 silverado that has sat for 2 years. it ran 6 months ago, but needed the fuel pump replaced. i went to get it started yesterday and the pump was stuck again. pulled the tank and replaced the pump and sender unit, all back together. ok, still no start. i am imagining the injectors are stuck, but this motor is foreign to me. i thought it was a regular throttle body injection till i went looking for the injectors. the manifold has me baffled. i see a fuel inlet, outlet and a small bundle of wires just behind the air intake going down into the manifold, but no clue what to do now. i have fuel pressure to the valve bleed, but i havent put a guage to it yet. its a customers truck, not mine. i normally work on mopars and fords, so this is the first i have seen this. anyone know what to do next? motor turns and runs with external fuel source, but wont run on it's own. fuel pump does pressurize with the key on/start and shuts down as it should when the motor stops. i know it's sticky injectors, just have no clue how to get to them nor how to unstick them. in the past, light tapping on the injectors while motor was turning or running on carb spray has worked, but at least i could find the injectors to tap them. help? anyone? thanks and yes, i have 5 gal fresh fuel and 2 bottles of fuel cleaner in the tank. i have bypassed the relay and run the pump about 20 minutes total to circulate the fresh fuel and cleaner through the system. it does bleed off and return to the tank from the regulator and injectors, am i correct? are these built into the **** intake manifold? im starting to think so.