Heres the problem- the new 61 Invicta I bought developed what I think is a carb problem. The car starts right up and runs fine for maybe 20 seconds/ half a minute. Then it starts to die like its running out of gas. If I work the throttle a little it will stay running. I can see two nice streams of fuel shoot out when the accelerator pump squirts. The carb has been previously rebuilt. And from what I see, just recently. I took the carb apart and found very fine sediment in the bottom of the float bowls. I took the carb apart, cleaned it as best I could and put it all back together. Same problem. I removed the fuel filter in the clear glass bowl and it was clean as a whistle. I did not check fuel pressure as I didnt have a gauge handy. But I dont belive its fuel pressure problem because I can keep it running off of the accelerator pump. Plus the pump looks brand new. Before I drop a couple of hundred at the carb shop, does anyone know what specifically might be wrong that I can look at? It would really suck to spend 200 bucks and have the same exact problem. Is this a problem possibly common to a 4GC? As you know, I have little experience with these early cars.