My 74 260Z stopped on me the other day. I've put in a new battery, changed the spark plugs and wires, and a new fuel pump. The alternator and starter work fine it cranks but doesn't start. Thats all of the stuff I know how to check. It started but it sounds like it's running out of gas. I know the fuel is getting to the carbs but it just won't start. Help me!!!!! I don't want to get rid of it but if i can't find what out whats wrong i'll have to sell it. Please help me if you can.