73 240Z. I just replaced the pick up line in my fuel tank by a reputable shop, due to rust. I replaced all fuel filters and the fuel pump. I have all the hoses hooked up correctly to the gas tank. My problem is I cannot pick up any fuel from the tank and I have 6 gallons in the tank. If I put compressed air to the pickup line, gas flows great when I remove the air, but no gas gets to my fuel filter after I attach fuel line. There is no rust or debris left in the tank. Any suggestions?