Fuel injection questions

To get that much gas in the engine might indicate a plumbing problem, like fuel line hooked to a vacuum port. It could also be from a shorted injector driver, resulting in them being full on when the key is on. In either case the engine likely could not run at all.

If working correctly there should be TBI injector pulses that range from less than 1mS to several mS depending on operating conditions.

As others suggest, armed with manuals and such, completely leave no stones untouched. I have done this with many orphaned cars, much is learned in the process.