just purchased a 1976. Sat for 5 years from a supposed fuel pump prob...long story short can not find fuel pump relay, fuel pump works with wire from batt. Problem is was able to start car with fuel poured into air intake, car would stop when out of fuel. Visual check showed injectors working. Found replacement ecu, transistor, condensors, throttle position( on intake) regulator,coil.. because car is now NOT getting spark...have clean every terminal, connector ect...any ideas?? Thank you.

Sat for 5 years

That's your problem. The tank/lines get clogged with sediment that builds up from the old gasoline just sitting for all that time. The tank and lines will need to be cleaned before the system would be able to generate enough fuel pressure to run properly. The fact that you were able to start car with fuel poured into air intake, but the car would stop when out of fuel tells me that you were getting spark. If that's no longer the case then that problem would lie somewhere in the 'replacement ecu, transistor, condensors, throttle position( on intake) regulator,coil' that you've installed.