The fact that you had 2 carbs with the same issue is why I brought up the FEV. If the resistor block was missing from when you got the buggy then it would be burning out the FEV on the new carb too. I had this same issue with ours- previous owner felt the resistor block wasn't needed and I had no clue it needed to be there. I had to pump the hell outta the gas pedal to get it to start. After buying another buugy with a GY6 I saw it (resistor block) and understood it's function after tracing the wires back to the FEV.Bought a new carb as I couldn't find the FEV by itself and no more starting problems. If the valve has burnt out in the idle mode then it wouldn't get gas at the higher rpm range. This may not be the issue- but it's easy to check to eliminate it as a suspect.
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