I have a 3.8L that is giving me headaches, here is what it is doing, runs fine most of the time, but maybe once a week when i go to start it the fuel pump just keeps running and it will never start, like it's not building pressure, If I wait maybe 1hr or so it will start fine!! Hard to troubleshoot issue for me anyone have any idea were to start looking????

I had a problem like this once. The hose that conected the fuel pump to the tank unit tube, inside the tank was partially off. Only way I found it was to do a fuel volume test, pressure was fine.