Recently, I tested and discovered that my fuel pump was going out. (reading 40 nonrunning-28 running, versus expected 47 nonrunning 42 running) I decided to replace it before it could become an issue, and did so Monday of the week of Thanksgiving. After replacing the pump, the lines gave up on top of the tank. Repaired the supply line and replaced the return with high pressure hose. The fuel regulator then gave out, followed by the battery. Replaced both, and now the car will crank but not start. Fuel is getting to the rail, and holding pressure. There is spark. The engine is not out of time, it's pulled partially apart to check that. There IS standing fuel in the return line even after the car has not run for a few days, but I don't know if that's an issue. There is a QDM A code, but that was being set before the pump was replaced. Security light behaves normally. Does anyone have any ideas about what's going on? I'm at my wit's end here.