1972 XJ6 Series 1...nothing custom. Was driving and it just stopped running...seems like no gas to the engine. Removed the two carbs and rebuilt them, checked the gas into the splitter at the bottom of the car assembly and we have pressure...about like a water fountain pace....when turned on. Crank the engine, it does not start. Pour some gas into the filter and it starts up just fine...so we have air and spark....just no fuel through the carbs it seems

Any thoughts on what to do?