Leaking gas can't find the source

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I have been fixing my Volvo a little at a time due to finances. I have replaced the rack and pinion and the air filter. And the fuel pump. When I drive her for longer than thirty minute the console and shift area get very hot but She doesn't run hot but yesterday she sprung a gas leak and I can't find the source. I had filled her up and put some Lucas fuel injector cleaner in as well. Drove about 3 miles and parked and saw the gas running out at the bottom. I waited for the gas to dry and the leak to stop. She was still on full and I drove her home. Not she cuts on but when sitting in idle she acts like she wants to cut off but doesn't.