A friend has an 03 that runs poorly. Checked rail pressure. Around 4000 at idle, but with the FCA unplugged it still idles at less than 10,000. I was expecting 18-20,000lbs. Checked relief, swapped out the rail pressure sensor, no change. He has an Edge, but all tests were performed with it totally removed. Did a cyl kill test, and found 2 weak injectors. Could a high return flow cause low rail pressure at idle? Also cranks for about a 5 count before firing. One of the symptoms is poor power and MIL after a long, hard pull with his 5vr. Thanks, Jeff.