Originally Posted by ScooterABC

First of all, what car/engine do you have, and what types of carbs?

Second, are you sure the fuel is making it to the carbs? There can be a lot of reasons why it might not (speaking as someone who just had a cracked hose resulting in an air leak so the fuel pump was sucking in air instead of pumping in gas). Take of the fuel supply line at the carb, put it in a jar or something to catch fuel, and verify that when the car is in the "on" position gas comes shooting out of it.

Third, take the tops off the carbs and see if there is fuel in the float bowls. (only do this if you verified that fuel is coming from the supply line).
Then report back.

Finally, did this all start to happen after you replaced the fuel pump with an electric pump?

I can't think of a reason that tuning or timing would either one be the problem here.