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I recently swapped some 240Z Carbs onto my 260Z, capped everything according to the other swap thread in this subforum (the only things that are unplugged are the PVC valve which im pretty sure has been unplugged since I got the car and the overflow hoses which arent connected to the air cleaner). I cranked the engine maybe 5 times before the car started and revved to 4000rpms and stayed there. I tried rearranging hoses and plugs and it did the same exact thing. the next day it wouldnt start and the engine would start going at very low rpms and would die at the same time the carbs spit gas out of the intake and would also have gas dripping from the fuel delivery line and the side of the float bowl. I havent been able to start it since then and have checked: The fuel return hose, still has the pressure cap on the end and gas moves through it. Checked the floats, the needle valve works, the needle is straight and the suction chamber moves freely The sparkplugs fire and I recently had the timing done. The gasket on my float bowl was shot, so I took it off (temporarily until I can get it running and the gaskets come in the mail) and it stopped the leaking on the front carb, but the rear carb continues to spill gas on the exhaust. There is only maybe an inch MAX of gas of the float bowl so I know its not flooding, but I dont know what else to check/replace. As a last ditch effort and because I dont know what to do, I capped the overflow lines, and the car started showing some semblance of its old self and started up as it usually would although a bit slowly, but there are a ton of warnings all over the forums saying NOT to do this. Are the float bowls pressurized? Any idea what else I can check/ replace to narrow this down?