[supereal]

Check the delivery of gas at the carb. You should have a steady stream into a receptacle as long as the engine is running. Check pressure of fuel will not tell you is the system not producing enough gas. Vehicles that sit for long time often have enough debris in the tank to affect delivery, as does a gas line that has rusted and/or filled with crud. Another common loss of power is a weak condenser. Substitution with another condenser will tell you if it is the reason. We are finding weak or open condensers being sold today.