It seems you are able to feather the RPM upward, while sputtering. You say you have a strong squirt down carb throat. So we are still stuck between fuel and spark.
We first think that something is keeping carb bowl from being, or staying, full enough to maintain high demand, but is good enough for idle dribble.
So we do a squirt test as an easy thing to observe. You saw a squirt. In this case, not conclusive. The feather up (increase in RPM) you describe can be low fuel delivery barley catching up to throttle demand, but not quite. That has a list of reasons from gas tank to bowl level to vac leak.
We also think it could be spark not timed or not strong. It starts and idles, so it's not totally screwed up.
So since you don't have a timing light and you do have spark and you have turned the dizzy and NO change..........
You can either do more fuel tests or some ignition spark/timing tests.
Next Fuel test:
1. Pump flow test at carb connection
Spark test:
1. Get a timing light and a vac pump/tester.
2. Points, condenser, rotor, cap, wiring, coil
If you can feather motor RPM enough to see if vac advance moves, that's good to do.
You said "finally got it to run". This indicates you have been doing work. What all have you done specifically?
What is the history?
1. We need to know everything you have done? besides carb.
2. When did it last run good?
3. What happened when it stopped running good?
4. How new are distributor parts?
5. Have you or anyone removed distributor?
6. Have you checked firing order on distributor and plug wire routing to correct plug?
7. Is gas old or new?
8. Do you have any actual "backfiring" at carb or at exhaust? or just mild coughing at carb.
9. Are you 100% sure that choke if OFF? and stays off.
10. How much RPM are you able to get to? 1000, 1500
Many times these question jog a memory and poster realizes something....but if not please answer.
