I hadn't used my 873 in a few months. Just went to start it and it's turning over strong but not even trying to start. Nice and warm outside today. Drained fuel filter; Opened air bleed valve & primed. Disconnected hose coming from fuel filter and getting fuel there when trying to start. Opened plug on fuel pump and get fuel there. But I don't get fuel when I loosen the line coming from the fuel pump to the injectors - on any of the four lines. Any ideas? Thanks! Derek