Only runs 40 Degrees advanced

I would like to present a scenario if i may.
If you had a stock type ignition system and could install it,disable efi.
Then rough set timing and check while cranking engine.
Perhaps the timing would be ok,for a carbed engine.
Throw a shot of gas in throttle body and see if it fires.

If i diagnose a fuel injected car for a bad pump,i give it a snort of gas and crank it. If it fires i know im on on the right track, be it a pump or delivery issue.