Update, I pulled the gas tank out, the old lines were intact but hard and broke when I took them off, I replaced them, put the tank back on, and poured 7 gallons of fresh gas in it. Didn't solve anything, at least I replaced the lines as those needed to be replaced anyway. Basically, it only starts after a short battle cranking it and only with the choke held open, once it starts its fine. It idles and revs fine in park, although if you wait a while in between revs it will hesitate and sputter a little. It also is able to drive foward and backward, but if you but slight sudden normal pressure on the gas it will sputter stall out.Same here. I bottle fed mine, pulled the top half of the carb off, changed things, etc.. Mine had been sitting for some time, I got it going and drove it for 2-3 weeks, then it did exactly what yours is doing. My pump was barely pulling enough to keep the engine alive but the accelerator pump would squirt because the bowl got filled at least once- you'd see and hear it shoot fuel.
Until I pulled the tank I was guessing trying to diagnose the combination of problems: Ignition? Carb? Leaks? I put on 2 different fuel pumps and pulled the filter about a dozen times, in addition to other things. Two feet of bad rubber had made my car un-driveable. It may seem like a big undertaking to drop the tank but in actuality it's a few hose clamps, 2 bolts, and 2 wires for the sending unit. With the car on stands and a jack for the tank it doesn't take one person long if the tank is near empty.
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