I just bought a 1975 Datusn 280z and i drove it home. It ran well beside the exhaust leak that i will be attempting to fix in the future. I took off the front and rear bumpers first thing. I had to remove the gas tank to remove the rear bumper shocks. After reinstalling the tank, i put some gas in for a total of around 3 gallons. The engine took a while to start and ran kind of crappy so i thought it might need more fuel so i put 2.5 gallons more in. It started and idled fine so i figured it i would drive to gas station to fill up. less than a 1/4 mile from house it started cutting out on me. I started to turn around and it died a few times before I got it back home. I put 2.5 gallons more in the next day and it would idle fine for a long time but still cut out when i tried driving it once it got to higher rpm. I cleaned out the fuel filter and then it ran good for about 3 or 4 high rpm pulls before it started to cut out again. this time it started to idle kind of crappy too. Anyone have any advice? it never cuts out at high rpm when idling though, its just under load. Any help would be greatly appreciated.